221022022100012 has 48 divisors (see below), whose sum is σ = 442222301848320. Its totient is φ = 94685532110400.

The previous prime is 221022022099943. The next prime is 221022022100017. The reversal of 221022022100012 is 210001220220122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221022022100017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866017439 + ... + 866272617.

It is an arithmetic number, because the mean of its divisors is an integer number (9212964621840).

Almost surely, 2^{221022022100012} is an apocalyptic number.

It is an amenable number.

221022022100012 is an abundant number, since it is smaller than the sum of its proper divisors (221200279748308).

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

221022022100012 is a wasteful number, since it uses less digits than its factorization.

221022022100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267542 (or 267540 counting only the distinct ones).

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

Adding to 221022022100012 its reverse (210001220220122), we get a palindrome (431023242320134).

The spelling of 221022022100012 in words is "two hundred twenty-one trillion, twenty-two billion, twenty-two million, one hundred thousand, twelve".