21010022022212 has 24 divisors (see below), whose sum is σ = 38702857620000. Its totient is φ = 9952068001536.

The previous prime is 21010022022181. The next prime is 21010022022217. The reversal of 21010022022212 is 21222022001012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21010022022217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19189268 + ... + 20254580.

It is an arithmetic number, because the mean of its divisors is an integer number (1612619067500).

Almost surely, 2^{21010022022212} is an apocalyptic number.

It is an amenable number.

21010022022212 is a deficient number, since it is larger than the sum of its proper divisors (17692835597788).

21010022022212 is a wasteful number, since it uses less digits than its factorization.

21010022022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324835 (or 1324833 counting only the distinct ones).

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

Adding to 21010022022212 its reverse (21222022001012), we get a palindrome (42232044023224).

It can be divided in two parts, 2101002 and 2022212, that added together give a palindrome (4123214).

The spelling of 21010022022212 in words is "twenty-one trillion, ten billion, twenty-two million, twenty-two thousand, two hundred twelve".