121003153 has 4 divisors (see below), whose sum is σ = 127371760. Its totient is φ = 114634548.

The previous prime is 121003123. The next prime is 121003231. The reversal of 121003153 is 351300121.

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 121003153 - 2²¹ = 118906001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121003123) 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, 3184275 + ... + 3184312.

It is an arithmetic number, because the mean of its divisors is an integer number (31842940).

Almost surely, 2^121003153 is an apocalyptic number.

It is an amenable number.

121003153 is a deficient number, since it is larger than the sum of its proper divisors (6368607).

121003153 is an equidigital number, since it uses as much as digits as its factorization.

121003153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368606.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 121003153 is about 11000.1433172482. The cubic root of 121003153 is about 494.6130404346.

Adding to 121003153 its reverse (351300121), we get a palindrome (472303274).

The spelling of 121003153 in words is "one hundred twenty-one million, three thousand, one hundred fifty-three".