20101210222212 has 72 divisors (see below), whose sum is σ = 61126487240000. Its totient is φ = 5440929081408.

The previous prime is 20101210222207. The next prime is 20101210222271. The reversal of 20101210222212 is 21222201210102.

It is a happy number.

20101210222212 is a `hidden beast` number, since 20 + 1 + 0 + 1 + 210 + 222 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2099119087 + ... + 2099128662.

Almost surely, 2^{20101210222212} is an apocalyptic number.

It is an amenable number.

20101210222212 is an abundant number, since it is smaller than the sum of its proper divisors (41025277017788).

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

20101210222212 is a wasteful number, since it uses less digits than its factorization.

20101210222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198247785 (or 4198247780 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20101210222212 its reverse (21222201210102), we get a palindrome (41323411432314).

The spelling of 20101210222212 in words is "twenty trillion, one hundred one billion, two hundred ten million, two hundred twenty-two thousand, two hundred twelve".