101215231715 has 16 divisors (see below), whose sum is σ = 132023672928. Its totient is φ = 74045012736.

The previous prime is 101215231661. The next prime is 101215231723. The reversal of 101215231715 is 517132512101.

It is a cyclic number.

It is not a de Polignac number, because 101215231715 - 2⁸ = 101215231459 is a prime.

It is a super-2 number, since 2×101215231715² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7269482 + ... + 7283391.

It is an arithmetic number, because the mean of its divisors is an integer number (8251479558).

Almost surely, 2^101215231715 is an apocalyptic number.

101215231715 is a deficient number, since it is larger than the sum of its proper divisors (30808441213).

101215231715 is a wasteful number, since it uses less digits than its factorization.

101215231715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14552998.

The product of its (nonzero) digits is 2100, while the sum is 29.

Adding to 101215231715 its reverse (517132512101), we get a palindrome (618347743816).

The spelling of 101215231715 in words is "one hundred one billion, two hundred fifteen million, two hundred thirty-one thousand, seven hundred fifteen".