202021222101012 has 72 divisors (see below), whose sum is σ = 515829849280200. Its totient is φ = 66659578003200.

The previous prime is 202021222101011. The next prime is 202021222101019. The reversal of 202021222101012 is 210101222120202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7172733814416 + 194848488286596 = 2678196^2 + 13958814^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021222101011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11339614 + ... + 23078762.

It is an arithmetic number, because the mean of its divisors is an integer number (7164303462225).

Almost surely, 2^{202021222101012} is an apocalyptic number.

It is an amenable number.

202021222101012 is an abundant number, since it is smaller than the sum of its proper divisors (313808627179188).

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

202021222101012 is a wasteful number, since it uses less digits than its factorization.

202021222101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11743993 (or 11743988 counting only the distinct ones).

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

Adding to 202021222101012 its reverse (210101222120202), we get a palindrome (412122444221214).

The spelling of 202021222101012 in words is "two hundred two trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, twelve".