20121022132 has 12 divisors (see below), whose sum is σ = 35216155296. Its totient is φ = 10059263480.

The previous prime is 20121022123. The next prime is 20121022139. The reversal of 20121022132 is 23122012102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121022139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275128 + ... + 340495.

It is an arithmetic number, because the mean of its divisors is an integer number (2934679608).

Almost surely, 2^20121022132 is an apocalyptic number.

It is an amenable number.

20121022132 is a deficient number, since it is larger than the sum of its proper divisors (15095133164).

20121022132 is a wasteful number, since it uses less digits than its factorization.

20121022132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623798 (or 623796 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20121022132 its reverse (23122012102), we get a palindrome (43243034234).

It can be divided in two parts, 2012 and 1022132, that added together give a square (1024144 = 1012²).

The spelling of 20121022132 in words is "twenty billion, one hundred twenty-one million, twenty-two thousand, one hundred thirty-two".