20130120210 has 64 divisors (see below), whose sum is σ = 49643476992. Its totient is φ = 5221526976.

The previous prime is 20130120173. The next prime is 20130120229. The reversal of 20130120210 is 1202103102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186037 + ... + 273623.

It is an arithmetic number, because the mean of its divisors is an integer number (775679328).

Almost surely, 2^20130120210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20130120210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24821738496).

20130120210 is an abundant number, since it is smaller than the sum of its proper divisors (29513356782).

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

20130120210 is a wasteful number, since it uses less digits than its factorization.

20130120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87807.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20130120210 its reverse (1202103102), we get a palindrome (21332223312).

The spelling of 20130120210 in words is "twenty billion, one hundred thirty million, one hundred twenty thousand, two hundred ten".