101212011200021 has 32 divisors (see below), whose sum is σ = 105690191644800. Its totient is φ = 96869763809280.

The previous prime is 101212011200017. The next prime is 101212011200029. The reversal of 101212011200021 is 120002110212101.

It is a cyclic number.

It is not a de Polignac number, because 101212011200021 - 2² = 101212011200017 is a prime.

It is a super-2 number, since 2×101212011200021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101212011199969 and 101212011200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212011200029) 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, 115369010 + ... + 116242988.

It is an arithmetic number, because the mean of its divisors is an integer number (3302818488900).

Almost surely, 2^{101212011200021} is an apocalyptic number.

It is an amenable number.

101212011200021 is a deficient number, since it is larger than the sum of its proper divisors (4478180444779).

101212011200021 is an equidigital number, since it uses as much as digits as its factorization.

101212011200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874469.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101212011200021 its reverse (120002110212101), we get a palindrome (221214121412122).

The spelling of 101212011200021 in words is "one hundred one trillion, two hundred twelve billion, eleven million, two hundred thousand, twenty-one".