121101101 has 4 divisors (see below), whose sum is σ = 132110304. Its totient is φ = 110091900.

The previous prime is 121101089. The next prime is 121101107. The reversal of 121101101 is 101101121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121101101 - 2¹⁸ = 120838957 is a prime.

It is a super-4 number, since 4×121101101⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5504585 + ... + 5504606.

It is an arithmetic number, because the mean of its divisors is an integer number (33027576).

Almost surely, 2^121101101 is an apocalyptic number.

121101101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121101101 is a deficient number, since it is larger than the sum of its proper divisors (11009203).

121101101 is a wasteful number, since it uses less digits than its factorization.

121101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009202.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 121101101 is about 11004.5945404635. The cubic root of 121101101 is about 494.7464620049.

Adding to 121101101 its reverse (101101121), we get a palindrome (222202222).

It can be divided in two parts, 121 and 101101, that multiplied together give a palindrome (12233221).

The spelling of 121101101 in words is "one hundred twenty-one million, one hundred one thousand, one hundred one".