21221121022202 has 32 divisors (see below), whose sum is σ = 32295074099904. Its totient is φ = 10456744435200.

The previous prime is 21221121022193. The next prime is 21221121022219. The reversal of 21221121022202 is 20222012112212.

It is a super-3 number, since 3×21221121022202³ (a number of 41 digits) contains 333 as substring.

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, 257162633 + ... + 257245139.

It is an arithmetic number, because the mean of its divisors is an integer number (1009221065622).

Almost surely, 2^{21221121022202} is an apocalyptic number.

21221121022202 is a deficient number, since it is larger than the sum of its proper divisors (11073953077702).

21221121022202 is a wasteful number, since it uses less digits than its factorization.

21221121022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86414.

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

Adding to 21221121022202 its reverse (20222012112212), we get a palindrome (41443133134414).

The spelling of 21221121022202 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty-two thousand, two hundred two".