21222225151026 has 64 divisors (see below), whose sum is σ = 43692762355200. Its totient is φ = 6867755417600.

The previous prime is 21222225150983. The next prime is 21222225151079. The reversal of 21222225151026 is 62015152222212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82712656 + ... + 82968836.

It is an arithmetic number, because the mean of its divisors is an integer number (682699411800).

Almost surely, 2^{21222225151026} is an apocalyptic number.

21222225151026 is an abundant number, since it is smaller than the sum of its proper divisors (22470537204174).

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

21222225151026 is a wasteful number, since it uses less digits than its factorization.

21222225151026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257875.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 21222225151026 its reverse (62015152222212), we get a palindrome (83237377373238).

The spelling of 21222225151026 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-five million, one hundred fifty-one thousand, twenty-six".