21222213110202 has 32 divisors (see below), whose sum is σ = 46391611678272. Its totient is φ = 6432450355584.

The previous prime is 21222213110167. The next prime is 21222213110227. The reversal of 21222213110202 is 20201131222212.

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, 2030439963 + ... + 2030450414.

It is an arithmetic number, because the mean of its divisors is an integer number (1449737864946).

Almost surely, 2^{21222213110202} is an apocalyptic number.

21222213110202 is an abundant number, since it is smaller than the sum of its proper divisors (25169398568070).

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

21222213110202 is a wasteful number, since it uses less digits than its factorization.

21222213110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060890462.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21222213110202 its reverse (20201131222212), we get a palindrome (41423344332414).

The spelling of 21222213110202 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred thirteen million, one hundred ten thousand, two hundred two".