21201122212202 has 32 divisors (see below), whose sum is σ = 32558892803712. Its totient is φ = 10351176827904.

The previous prime is 21201122212183. The next prime is 21201122212217. The reversal of 21201122212202 is 20221222110212.

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, 24682298 + ... + 25526810.

It is an arithmetic number, because the mean of its divisors is an integer number (1017465400116).

Almost surely, 2^{21201122212202} is an apocalyptic number.

21201122212202 is a deficient number, since it is larger than the sum of its proper divisors (11357770591510).

21201122212202 is a wasteful number, since it uses less digits than its factorization.

21201122212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846302.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21201122212202 its reverse (20221222110212), we get a palindrome (41422344322414).

The spelling of 21201122212202 in words is "twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred two".