212220021220011 has 96 divisors (see below), whose sum is σ = 354397449893760. Its totient is φ = 119865360384000.

The previous prime is 212220021219979. The next prime is 212220021220021. The reversal of 212220021220011 is 110022120022212.

It is a happy number.

212220021220011 is a `hidden beast` number, since 21 + 2 + 220 + 0 + 212 + 200 + 11 = 666.

It is not a de Polignac number, because 212220021220011 - 2⁵ = 212220021219979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212220021220021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9456787551 + ... + 9456809991.

It is an arithmetic number, because the mean of its divisors is an integer number (3691640103060).

Almost surely, 2^{212220021220011} is an apocalyptic number.

212220021220011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212220021220011 is a deficient number, since it is larger than the sum of its proper divisors (142177428673749).

212220021220011 is a wasteful number, since it uses less digits than its factorization.

212220021220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24997 (or 24994 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212220021220011 its reverse (110022120022212), we get a palindrome (322242141242223).

The spelling of 212220021220011 in words is "two hundred twelve trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, eleven".