20121122130 has 32 divisors (see below), whose sum is σ = 48952214784. Its totient is φ = 5292130176.

The previous prime is 20121122117. The next prime is 20121122149. The reversal of 20121122130 is 3122112102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4591674 + ... + 4596053.

It is an arithmetic number, because the mean of its divisors is an integer number (1529756712).

Almost surely, 2^20121122130 is an apocalyptic number.

20121122130 is an abundant number, since it is smaller than the sum of its proper divisors (28831092654).

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

20121122130 is a wasteful number, since it uses less digits than its factorization.

20121122130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187810.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20121122130 its reverse (3122112102), we get a palindrome (23243234232).

The spelling of 20121122130 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred thirty".