22221212032110 has 256 divisors, whose sum is σ = 69317089099776. Its totient is φ = 4430554495488.

The previous prime is 22221212032007. The next prime is 22221212032147. The reversal of 22221212032110 is 1123021212222.

It is a super-3 number, since 3×22221212032110³ (a number of 41 digits) contains 333 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3079659 + ... + 7343481.

It is an arithmetic number, because the mean of its divisors is an integer number (270769879296).

Almost surely, 2^{22221212032110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221212032110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34658544549888).

22221212032110 is an abundant number, since it is smaller than the sum of its proper divisors (47095877067666).

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

22221212032110 is a wasteful number, since it uses less digits than its factorization.

22221212032110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263959.

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

Adding to 22221212032110 its reverse (1123021212222), we get a palindrome (23344233244332).

The spelling of 22221212032110 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, thirty-two thousand, one hundred ten".