107139872021 has 16 divisors (see below), whose sum is σ = 139621192704. Its totient is φ = 79783536384.

The previous prime is 107139872017. The next prime is 107139872057. The reversal of 107139872021 is 120278931701.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 107139872021 - 2² = 107139872017 is a prime.

It is a super-2 number, since 2×107139872021² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 107139872021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107139872071) 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, 34626725 + ... + 34629818.

It is an arithmetic number, because the mean of its divisors is an integer number (8726324544).

Almost surely, 2^107139872021 is an apocalyptic number.

It is an amenable number.

107139872021 is a deficient number, since it is larger than the sum of its proper divisors (32481320683).

107139872021 is a wasteful number, since it uses less digits than its factorization.

107139872021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69256580.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 107139872021 in words is "one hundred seven billion, one hundred thirty-nine million, eight hundred seventy-two thousand, twenty-one".