20121030132 has 36 divisors (see below), whose sum is σ = 54614226240. Its totient is φ = 5748865584.

The previous prime is 20121030113. The next prime is 20121030169. The reversal of 20121030132 is 23103012102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17109132 + ... + 17110307.

It is an arithmetic number, because the mean of its divisors is an integer number (1517061840).

Almost surely, 2^20121030132 is an apocalyptic number.

It is an amenable number.

20121030132 is an abundant number, since it is smaller than the sum of its proper divisors (34493196108).

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

20121030132 is a wasteful number, since it uses less digits than its factorization.

20121030132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34219460 (or 34219451 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20121030132 its reverse (23103012102), we get a palindrome (43224042234).

The spelling of 20121030132 in words is "twenty billion, one hundred twenty-one million, thirty thousand, one hundred thirty-two".