121330131210 has 24 divisors (see below), whose sum is σ = 315458341380. Its totient is φ = 32354701632.

The previous prime is 121330131187. The next prime is 121330131259. The reversal of 121330131210 is 12131033121.

121330131210 is a `hidden beast` number, since 1 + 21 + 330 + 1 + 312 + 1 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 117002991249 + 4327139961 = 342057^2 + 65781^2 .

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 11 ways as a sum of consecutive naturals, for example, 674056195 + ... + 674056374.

Almost surely, 2^121330131210 is an apocalyptic number.

121330131210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121330131210 is an abundant number, since it is smaller than the sum of its proper divisors (194128210170).

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

121330131210 is a wasteful number, since it uses less digits than its factorization.

121330131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348112582 (or 1348112579 counting only the distinct ones).

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

Adding to 121330131210 its reverse (12131033121), we get a palindrome (133461164331).

The spelling of 121330131210 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred thirty-one thousand, two hundred ten".