121527706531 has 12 divisors (see below), whose sum is σ = 152662905136. Its totient is φ = 94696913520.

The previous prime is 121527706493. The next prime is 121527706541. The reversal of 121527706531 is 135607725121.

It is not a de Polignac number, because 121527706531 - 2¹³ = 121527698339 is a prime.

It is a super-2 number, since 2×121527706531² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121527706541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71739240 + ... + 71740933.

Almost surely, 2^121527706531 is an apocalyptic number.

121527706531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121527706531 is a deficient number, since it is larger than the sum of its proper divisors (31135198605).

121527706531 is a wasteful number, since it uses less digits than its factorization.

121527706531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143480202 (or 143480191 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 121527706531 in words is "one hundred twenty-one billion, five hundred twenty-seven million, seven hundred six thousand, five hundred thirty-one".