22132105212 has 144 divisors (see below), whose sum is σ = 62074736640. Its totient is φ = 6011474304.

The previous prime is 22132105199. The next prime is 22132105253. The reversal of 22132105212 is 21250123122.

It is a super-2 number, since 2×22132105212² (a number of 21 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 47 ways as a sum of consecutive naturals, for example, 7685989 + ... + 7688867.

It is an arithmetic number, because the mean of its divisors is an integer number (431074560).

Almost surely, 2^22132105212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22132105212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31037368320).

22132105212 is an abundant number, since it is smaller than the sum of its proper divisors (39942631428).

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

22132105212 is a wasteful number, since it uses less digits than its factorization.

22132105212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 22132105212 its reverse (21250123122), we get a palindrome (43382228334).

The spelling of 22132105212 in words is "twenty-two billion, one hundred thirty-two million, one hundred five thousand, two hundred twelve".