221021210201012 has 12 divisors (see below), whose sum is σ = 416539973071236. Its totient is φ = 102009789323520.

The previous prime is 221021210200993. The next prime is 221021210201047. The reversal of 221021210201012 is 210102012120122.

It can be written as a sum of positive squares in 2 ways, for example, as 122985349695376 + 98035860505636 = 11089876^2 + 9901306^2 .

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, 2125203944189 + ... + 2125203944292.

It is an arithmetic number, because the mean of its divisors is an integer number (34711664422603).

Almost surely, 2^{221021210201012} is an apocalyptic number.

It is an amenable number.

221021210201012 is a deficient number, since it is larger than the sum of its proper divisors (195518762870224).

221021210201012 is a wasteful number, since it uses less digits than its factorization.

221021210201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250407888498 (or 4250407888496 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221021210201012 its reverse (210102012120122), we get a palindrome (431123222321134).

The spelling of 221021210201012 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred ten million, two hundred one thousand, twelve".