121520355132000 has 192 divisors, whose sum is σ = 434291655103488. Its totient is φ = 29459480000000.

The previous prime is 121520355131977. The next prime is 121520355132079. The reversal of 121520355132000 is 231553025121.

It is a super-2 number, since 2×121520355132000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460172376 + ... + 460436375.

It is an arithmetic number, because the mean of its divisors is an integer number (2261935703664).

Almost surely, 2^{121520355132000} is an apocalyptic number.

121520355132000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121520355132000 is an abundant number, since it is smaller than the sum of its proper divisors (312771299971488).

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

121520355132000 is a wasteful number, since it uses less digits than its factorization.

121520355132000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920608790 (or 920608772 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 121520355132000 in words is "one hundred twenty-one trillion, five hundred twenty billion, three hundred fifty-five million, one hundred thirty-two thousand".