20130121030 has 48 divisors (see below), whose sum is σ = 36828737856. Its totient is φ = 7921630080.

The previous prime is 20130121021. The next prime is 20130121117. The reversal of 20130121030 is 3012103102.

It is a self number, because there is not a number n which added to its sum of digits gives 20130121030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22096275 + ... + 22097185.

It is an arithmetic number, because the mean of its divisors is an integer number (767265372).

Almost surely, 2^20130121030 is an apocalyptic number.

20130121030 is a deficient number, since it is larger than the sum of its proper divisors (16698616826).

20130121030 is a wasteful number, since it uses less digits than its factorization.

20130121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20130121030 its reverse (3012103102), we get a palindrome (23142224132).

The spelling of 20130121030 in words is "twenty billion, one hundred thirty million, one hundred twenty-one thousand, thirty".