121276120660 has 24 divisors (see below), whose sum is σ = 254689386336. Its totient is φ = 48508632480.

The previous prime is 121276120631. The next prime is 121276120663. The reversal of 121276120660 is 66021672121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121276120663) 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, 520599 + ... + 716641.

It is an arithmetic number, because the mean of its divisors is an integer number (10612057764).

Almost surely, 2^121276120660 is an apocalyptic number.

121276120660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121276120660 is an abundant number, since it is smaller than the sum of its proper divisors (133413265676).

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

121276120660 is a wasteful number, since it uses less digits than its factorization.

121276120660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226983 (or 226981 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 121276120660 its reverse (66021672121), we get a palindrome (187297792781).

The spelling of 121276120660 in words is "one hundred twenty-one billion, two hundred seventy-six million, one hundred twenty thousand, six hundred sixty".