121652013 has 32 divisors (see below), whose sum is σ = 195436800. Its totient is φ = 65834496.

The previous prime is 121652009. The next prime is 121652023. The reversal of 121652013 is 310256121.

It is not a de Polignac number, because 121652013 - 2² = 121652009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121652023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30393 + ... + 34161.

It is an arithmetic number, because the mean of its divisors is an integer number (6107400).

Almost surely, 2^121652013 is an apocalyptic number.

It is an amenable number.

121652013 is a deficient number, since it is larger than the sum of its proper divisors (73784787).

121652013 is a wasteful number, since it uses less digits than its factorization.

121652013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 121652013 is about 11029.5971367952. The cubic root of 121652013 is about 495.4955592199.

The spelling of 121652013 in words is "one hundred twenty-one million, six hundred fifty-two thousand, thirteen".