121002621 has 8 divisors (see below), whose sum is σ = 169828320. Its totient is φ = 76422672.

The previous prime is 121002619. The next prime is 121002631. The reversal of 121002621 is 126200121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121002621 - 2¹ = 121002619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121002621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061370 + ... + 1061483.

It is an arithmetic number, because the mean of its divisors is an integer number (21228540).

Almost surely, 2^121002621 is an apocalyptic number.

It is an amenable number.

121002621 is a deficient number, since it is larger than the sum of its proper divisors (48825699).

121002621 is a wasteful number, since it uses less digits than its factorization.

121002621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122875.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121002621 is about 11000.1191357185. The cubic root of 121002621 is about 494.6123155650.

Adding to 121002621 its reverse (126200121), we get a palindrome (247202742).

The spelling of 121002621 in words is "one hundred twenty-one million, two thousand, six hundred twenty-one".