212102022220100 has 36 divisors (see below), whose sum is σ = 466566338757204. Its totient is φ = 83678606023680.

The previous prime is 212102022220091. The next prime is 212102022220139. The reversal of 212102022220100 is 1022220201212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 199499795716 + 211902522424384 = 446654^2 + 14556872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14527528469 + ... + 14527543068.

It is an arithmetic number, because the mean of its divisors is an integer number (12960176076589).

Almost surely, 2^{212102022220100} is an apocalyptic number.

212102022220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102022220100 is an abundant number, since it is smaller than the sum of its proper divisors (254464316537104).

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

212102022220100 is a wasteful number, since it uses less digits than its factorization.

212102022220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29055071624 (or 29055071617 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212102022220100 its reverse (1022220201212), we get a palindrome (213124242421312).

The spelling of 212102022220100 in words is "two hundred twelve trillion, one hundred two billion, twenty-two million, two hundred twenty thousand, one hundred".