121311402 has 8 divisors (see below), whose sum is σ = 242622816. Its totient is φ = 40437132.

The previous prime is 121311349. The next prime is 121311413. The reversal of 121311402 is 204113121.

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

121311402 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10109278 + ... + 10109289.

It is an arithmetic number, because the mean of its divisors is an integer number (30327852).

Almost surely, 2^121311402 is an apocalyptic number.

121311402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121311402 is a wasteful number, since it uses less digits than its factorization.

121311402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20218572.

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

The square root of 121311402 is about 11014.1455410758. The cubic root of 121311402 is about 495.0326843024.

Adding to 121311402 its reverse (204113121), we get a palindrome (325424523).

The spelling of 121311402 in words is "one hundred twenty-one million, three hundred eleven thousand, four hundred two".