21022221012010 has 32 divisors (see below), whose sum is σ = 37866681135360. Its totient is φ = 8402960881152.

The previous prime is 21022221011993. The next prime is 21022221012043. The reversal of 21022221012010 is 1021012222012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81680547 + ... + 81937513.

It is an arithmetic number, because the mean of its divisors is an integer number (1183333785480).

Almost surely, 2^{21022221012010} is an apocalyptic number.

21022221012010 is a deficient number, since it is larger than the sum of its proper divisors (16844460123350).

21022221012010 is a wasteful number, since it uses less digits than its factorization.

21022221012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262710.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022221012010 its reverse (1021012222012), we get a palindrome (22043233234022).

The spelling of 21022221012010 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-one million, twelve thousand, ten".