22121021132 has 48 divisors (see below), whose sum is σ = 45854867520. Its totient is φ = 9139537152.

The previous prime is 22121021119. The next prime is 22121021177. The reversal of 22121021132 is 23112012122.

It is a super-2 number, since 2×22121021132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121021132.

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 15 ways as a sum of consecutive naturals, for example, 14978 + ... + 210870.

It is an arithmetic number, because the mean of its divisors is an integer number (955309740).

Almost surely, 2^22121021132 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 22121021132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22927433760).

22121021132 is an abundant number, since it is smaller than the sum of its proper divisors (23733846388).

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

22121021132 is a wasteful number, since it uses less digits than its factorization.

22121021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196050 (or 196048 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22121021132 its reverse (23112012122), we get a palindrome (45233033254).

The spelling of 22121021132 in words is "twenty-two billion, one hundred twenty-one million, twenty-one thousand, one hundred thirty-two".