21220122212002 has 32 divisors (see below), whose sum is σ = 37636634707200. Its totient is φ = 8779599019968.

The previous prime is 21220122211961. The next prime is 21220122212099. The reversal of 21220122212002 is 20021222102212.

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, 265177 + ... + 6520012.

It is an arithmetic number, because the mean of its divisors is an integer number (1176144834600).

Almost surely, 2^{21220122212002} is an apocalyptic number.

21220122212002 is a deficient number, since it is larger than the sum of its proper divisors (16416512495198).

21220122212002 is a wasteful number, since it uses less digits than its factorization.

21220122212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792930.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21220122212002 its reverse (20021222102212), we get a palindrome (41241344314214).

The spelling of 21220122212002 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred twelve thousand, two".