22102021212222 has 64 divisors (see below), whose sum is σ = 50667456374784. Its totient is φ = 6296296497120.

The previous prime is 22102021212217. The next prime is 22102021212233. The reversal of 22102021212222 is 22221212020122.

It is a super-2 number, since 2×22102021212222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337078413 + ... + 337143975.

It is an arithmetic number, because the mean of its divisors is an integer number (791679005856).

Almost surely, 2^{22102021212222} is an apocalyptic number.

22102021212222 is an abundant number, since it is smaller than the sum of its proper divisors (28565435162562).

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

22102021212222 is a wasteful number, since it uses less digits than its factorization.

22102021212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89053.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22102021212222 its reverse (22221212020122), we get a palindrome (44323233232344).

The spelling of 22102021212222 in words is "twenty-two trillion, one hundred two billion, twenty-one million, two hundred twelve thousand, two hundred twenty-two".