915121201212001 has 32 divisors (see below), whose sum is σ = 1102355341459200. Its totient is φ = 743035279983360.

The previous prime is 915121201211969. The next prime is 915121201212067. The reversal of 915121201212001 is 100212102121519.

It is not a de Polignac number, because 915121201212001 - 2⁵ = 915121201211969 is a prime.

It is a super-2 number, since 2×915121201212001² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (915121201212091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482228946 + ... + 484122916.

It is an arithmetic number, because the mean of its divisors is an integer number (34448604420600).

Almost surely, 2^{915121201212001} is an apocalyptic number.

It is an amenable number.

915121201212001 is a deficient number, since it is larger than the sum of its proper divisors (187234140247199).

915121201212001 is a wasteful number, since it uses less digits than its factorization.

915121201212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938969.

The product of its (nonzero) digits is 720, while the sum is 28.

The spelling of 915121201212001 in words is "nine hundred fifteen trillion, one hundred twenty-one billion, two hundred one million, two hundred twelve thousand, one".