121312052 has 12 divisors (see below), whose sum is σ = 219144576. Its totient is φ = 58699320.

The previous prime is 121312049. The next prime is 121312069. The reversal of 121312052 is 250213121.

It is a happy number.

It is a super-2 number, since 2×121312052² = 29433227920901408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121312052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489038 + ... + 489285.

It is an arithmetic number, because the mean of its divisors is an integer number (18262048).

Almost surely, 2^121312052 is an apocalyptic number.

It is an amenable number.

121312052 is a deficient number, since it is larger than the sum of its proper divisors (97832524).

121312052 is a wasteful number, since it uses less digits than its factorization.

121312052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978358 (or 978356 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121312052 is about 11014.1750485454. The cubic root of 121312052 is about 495.0335684476.

Adding to 121312052 its reverse (250213121), we get a palindrome (371525173).

The spelling of 121312052 in words is "one hundred twenty-one million, three hundred twelve thousand, fifty-two".