21277267157102 has 16 divisors (see below), whose sum is σ = 34857973296432. Its totient is φ = 9660199782720.

The previous prime is 21277267157071. The next prime is 21277267157141. The reversal of 21277267157102 is 20175176277212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564245153 + ... + 564282860.

It is an arithmetic number, because the mean of its divisors is an integer number (2178623331027).

Almost surely, 2^{21277267157102} is an apocalyptic number.

21277267157102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21277267157102 is a deficient number, since it is larger than the sum of its proper divisors (13580706139330).

21277267157102 is a wasteful number, since it uses less digits than its factorization.

21277267157102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128528883.

The product of its (nonzero) digits is 1152480, while the sum is 50.

The spelling of 21277267157102 in words is "twenty-one trillion, two hundred seventy-seven billion, two hundred sixty-seven million, one hundred fifty-seven thousand, one hundred two".