220121202120212 has 12 divisors (see below), whose sum is σ = 385212208981236. Its totient is φ = 110060570982720.

The previous prime is 220121202120101. The next prime is 220121202120269. The reversal of 220121202120212 is 212021202121022.

It can be written as a sum of positive squares in 2 ways, for example, as 62566138335376 + 157555063784836 = 7909876^2 + 12552094^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20787512 + ... + 29535792.

It is an arithmetic number, because the mean of its divisors is an integer number (32101017415103).

Almost surely, 2^{220121202120212} is an apocalyptic number.

It is an amenable number.

220121202120212 is a deficient number, since it is larger than the sum of its proper divisors (165091006861024).

220121202120212 is a wasteful number, since it uses less digits than its factorization.

220121202120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15038698 (or 15038696 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220121202120212 its reverse (212021202121022), we get a palindrome (432142404241234).

The spelling of 220121202120212 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty thousand, two hundred twelve".