210121131330 has 48 divisors (see below), whose sum is σ = 595979938944. Its totient is φ = 50938455840.

The previous prime is 210121131293. The next prime is 210121131359. The reversal of 210121131330 is 33131121012.

210121131330 is a `hidden beast` number, since 210 + 12 + 113 + 1 + 330 = 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 23 ways as a sum of consecutive naturals, for example, 106120794 + ... + 106122773.

It is an arithmetic number, because the mean of its divisors is an integer number (12416248728).

Almost surely, 2^210121131330 is an apocalyptic number.

210121131330 is an abundant number, since it is smaller than the sum of its proper divisors (385858807614).

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

210121131330 is a wasteful number, since it uses less digits than its factorization.

210121131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212243591 (or 212243588 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 210121131330 its reverse (33131121012), we get a palindrome (243252252342).

The spelling of 210121131330 in words is "two hundred ten billion, one hundred twenty-one million, one hundred thirty-one thousand, three hundred thirty".