121927509311 has 16 divisors (see below), whose sum is σ = 127885976064. Its totient is φ = 116025031584.

The previous prime is 121927509271. The next prime is 121927509323. The reversal of 121927509311 is 113905729121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121927509311 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 (121927509211) 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, 4565780 + ... + 4592406.

It is an arithmetic number, because the mean of its divisors is an integer number (7992873504).

Almost surely, 2^121927509311 is an apocalyptic number.

121927509311 is a deficient number, since it is larger than the sum of its proper divisors (5958466753).

121927509311 is a wasteful number, since it uses less digits than its factorization.

121927509311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27670.

The product of its (nonzero) digits is 34020, while the sum is 41.

The spelling of 121927509311 in words is "one hundred twenty-one billion, nine hundred twenty-seven million, five hundred nine thousand, three hundred eleven".