212101011012122 has 16 divisors (see below), whose sum is σ = 318389189385960. Its totient is φ = 105971302574592.

The previous prime is 212101011012113. The next prime is 212101011012127. The reversal of 212101011012122 is 221210110101212.

It can be written as a sum of positive squares in 4 ways, for example, as 48873787378441 + 163227223633681 = 6990979^2 + 12776041^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212101011012122.

It is not an unprimeable number, because it can be changed into a prime (212101011012127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14539778 + ... + 25211250.

Almost surely, 2^{212101011012122} is an apocalyptic number.

212101011012122 is a deficient number, since it is larger than the sum of its proper divisors (106288178373838).

212101011012122 is a wasteful number, since it uses less digits than its factorization.

212101011012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10678897.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212101011012122 its reverse (221210110101212), we get a palindrome (433311121113334).

The spelling of 212101011012122 in words is "two hundred twelve trillion, one hundred one billion, eleven million, twelve thousand, one hundred twenty-two".