129220526079107 has 20 divisors (see below), whose sum is σ = 136902745303776. Its totient is φ = 121967680152240.

The previous prime is 129220526078957. The next prime is 129220526079109. The reversal of 129220526079107 is 701970625022921.

It is a de Polignac number, because none of the positive numbers 2^k-129220526079107 is a prime.

It is a super-2 number, since 2×129220526079107² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129220526079109) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33487553 + ... + 37146429.

Almost surely, 2^{129220526079107} is an apocalyptic number.

129220526079107 is a deficient number, since it is larger than the sum of its proper divisors (7682219224669).

129220526079107 is an frugal number, since it uses more digits than its factorization.

129220526079107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659224 (or 3659167 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 129220526079107 in words is "one hundred twenty-nine trillion, two hundred twenty billion, five hundred twenty-six million, seventy-nine thousand, one hundred seven".