121560622127 has 24 divisors (see below), whose sum is σ = 149807023344. Its totient is φ = 98012205312.

The previous prime is 121560622111. The next prime is 121560622129. The reversal of 121560622127 is 721226065121.

It is not a de Polignac number, because 121560622127 - 2⁴ = 121560622111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121560622129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1524668 + ... + 1602414.

It is an arithmetic number, because the mean of its divisors is an integer number (6241959306).

Almost surely, 2^121560622127 is an apocalyptic number.

121560622127 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121560622127 is a deficient number, since it is larger than the sum of its proper divisors (28246401217).

121560622127 is a wasteful number, since it uses less digits than its factorization.

121560622127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79655 (or 79648 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 121560622127 its reverse (721226065121), we get a palindrome (842786687248).

The spelling of 121560622127 in words is "one hundred twenty-one billion, five hundred sixty million, six hundred twenty-two thousand, one hundred twenty-seven".