212213302021 has 32 divisors (see below), whose sum is σ = 270954789120. Its totient is φ = 161800934400.

The previous prime is 212213302019. The next prime is 212213302043. The reversal of 212213302021 is 120203312212.

It is not a de Polignac number, because 212213302021 - 2¹ = 212213302019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212213302021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212213300021) 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, 840411 + ... + 1063351.

It is an arithmetic number, because the mean of its divisors is an integer number (8467337160).

Almost surely, 2^212213302021 is an apocalyptic number.

It is an amenable number.

212213302021 is a deficient number, since it is larger than the sum of its proper divisors (58741487099).

212213302021 is a wasteful number, since it uses less digits than its factorization.

212213302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223405.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212213302021 its reverse (120203312212), we get a palindrome (332416614233).

The spelling of 212213302021 in words is "two hundred twelve billion, two hundred thirteen million, three hundred two thousand, twenty-one".