210020121131130 has 96 divisors (see below), whose sum is σ = 550557145442304. Its totient is φ = 55543660599168.

The previous prime is 210020121131129. The next prime is 210020121131141. The reversal of 210020121131130 is 31131121020012.

210020121131130 is a `hidden beast` number, since 2 + 100 + 201 + 21 + 1 + 311 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27242452 + ... + 34090928.

It is an arithmetic number, because the mean of its divisors is an integer number (5734970265024).

Almost surely, 2^{210020121131130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210020121131130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275278572721152).

210020121131130 is an abundant number, since it is smaller than the sum of its proper divisors (340537024311174).

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

210020121131130 is a wasteful number, since it uses less digits than its factorization.

210020121131130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851300 (or 6851297 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 210020121131130 its reverse (31131121020012), we get a palindrome (241151242151142).

The spelling of 210020121131130 in words is "two hundred ten trillion, twenty billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred thirty".