121611996 has 48 divisors (see below), whose sum is σ = 343956480. Its totient is φ = 36851760.

The previous prime is 121611961. The next prime is 121612009. The reversal of 121611996 is 699116121.

It is a super-2 number, since 2×121611996² = 29578955142208032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121611996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49996 + ... + 52371.

It is an arithmetic number, because the mean of its divisors is an integer number (7165760).

Almost surely, 2^121611996 is an apocalyptic number.

It is an amenable number.

121611996 is an abundant number, since it is smaller than the sum of its proper divisors (222344484).

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

121611996 is a wasteful number, since it uses less digits than its factorization.

121611996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102391 (or 102383 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 121611996 is about 11027.7829140766. The cubic root of 121611996 is about 495.4412227568.

The spelling of 121611996 in words is "one hundred twenty-one million, six hundred eleven thousand, nine hundred ninety-six".