212200220011021 has 32 divisors (see below), whose sum is σ = 248964104908800. Its totient is φ = 178808472348480.

The previous prime is 212200220011019. The next prime is 212200220011099. The reversal of 212200220011021 is 120110022002212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212200220011021 - 2¹ = 212200220011019 is a prime.

It is a super-2 number, since 2×212200220011021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212200220010986 and 212200220011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200220011421) 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, 22704181 + ... + 30657466.

It is an arithmetic number, because the mean of its divisors is an integer number (7780128278400).

Almost surely, 2^{212200220011021} is an apocalyptic number.

It is an amenable number.

212200220011021 is a deficient number, since it is larger than the sum of its proper divisors (36763884897779).

212200220011021 is a wasteful number, since it uses less digits than its factorization.

212200220011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53362089.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212200220011021 its reverse (120110022002212), we get a palindrome (332310242013233).

The spelling of 212200220011021 in words is "two hundred twelve trillion, two hundred billion, two hundred twenty million, eleven thousand, twenty-one".