121031406560 has 96 divisors (see below), whose sum is σ = 286921414080. Its totient is φ = 48246202368.

The previous prime is 121031406547. The next prime is 121031406569. The reversal of 121031406560 is 65604130121.

It is a happy number.

It is a super-2 number, since 2×121031406560² (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 (121031406569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98962109 + ... + 98963331.

It is an arithmetic number, because the mean of its divisors is an integer number (2988764730).

Almost surely, 2^121031406560 is an apocalyptic number.

121031406560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121031406560 is an abundant number, since it is smaller than the sum of its proper divisors (165890007520).

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

121031406560 is a wasteful number, since it uses less digits than its factorization.

121031406560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 121031406560 its reverse (65604130121), we get a palindrome (186635536681).

The spelling of 121031406560 in words is "one hundred twenty-one billion, thirty-one million, four hundred six thousand, five hundred sixty".