121210212130 has 16 divisors (see below), whose sum is σ = 249346722240. Its totient is φ = 41557786992.

The previous prime is 121210212103. The next prime is 121210212139. The reversal of 121210212130 is 31212012121.

It is not an unprimeable number, because it can be changed into a prime (121210212139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865787160 + ... + 865787299.

It is an arithmetic number, because the mean of its divisors is an integer number (15584170140).

Almost surely, 2^121210212130 is an apocalyptic number.

121210212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210212130 is an abundant number, since it is smaller than the sum of its proper divisors (128136510110).

121210212130 is a wasteful number, since it uses less digits than its factorization.

121210212130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731574473.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121210212130 its reverse (31212012121), we get a palindrome (152422224251).

Subtracting from 121210212130 its reverse (31212012121), we obtain a square (89998200009 = 299997²).

The spelling of 121210212130 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred thirty".