121616452 has 12 divisors (see below), whose sum is σ = 212909116. Its totient is φ = 60785280.

The previous prime is 121616431. The next prime is 121616477. The reversal of 121616452 is 254616121.

It can be written as a sum of positive squares in 2 ways, for example, as 484416 + 121132036 = 696^2 + 11006^2 .

It is a super-2 number, since 2×121616452² = 29581122794136608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 121616452.

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, 12952 + ... + 20272.

Almost surely, 2^121616452 is an apocalyptic number.

It is an amenable number.

121616452 is a deficient number, since it is larger than the sum of its proper divisors (91292664).

121616452 is a wasteful number, since it uses less digits than its factorization.

121616452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11478 (or 11476 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 121616452 is about 11027.9849473963. The cubic root of 121616452 is about 495.4472738571.

The spelling of 121616452 in words is "one hundred twenty-one million, six hundred sixteen thousand, four hundred fifty-two".