121290609884 has 12 divisors (see below), whose sum is σ = 212267240304. Its totient is φ = 60642826944.

The previous prime is 121290609883. The next prime is 121290609907. The reversal of 121290609884 is 488906092121.

It is a super-2 number, since 2×121290609884² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121290609883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507104 + ... + 706919.

It is an arithmetic number, because the mean of its divisors is an integer number (17688936692).

Almost surely, 2^121290609884 is an apocalyptic number.

It is an amenable number.

121290609884 is a deficient number, since it is larger than the sum of its proper divisors (90976630420).

121290609884 is a wasteful number, since it uses less digits than its factorization.

121290609884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239004 (or 1239002 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 121290609884 in words is "one hundred twenty-one billion, two hundred ninety million, six hundred nine thousand, eight hundred eighty-four".