212001222220122 has 32 divisors (see below), whose sum is σ = 435465018499392. Its totient is φ = 68756671805184.

The previous prime is 212001222220111. The next prime is 212001222220127. The reversal of 212001222220122 is 221022222100212.

It is not an unprimeable number, because it can be changed into a prime (212001222220127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29149653 + ... + 35688999.

It is an arithmetic number, because the mean of its divisors is an integer number (13608281828106).

Almost surely, 2^{212001222220122} is an apocalyptic number.

212001222220122 is an abundant number, since it is smaller than the sum of its proper divisors (223463796279270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212001222220122 is a wasteful number, since it uses less digits than its factorization.

212001222220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6685422.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212001222220122 its reverse (221022222100212), we get a palindrome (433023444320334).

The spelling of 212001222220122 in words is "two hundred twelve trillion, one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".