121560617276 has 48 divisors (see below), whose sum is σ = 248384472000. Its totient is φ = 52034076864.

The previous prime is 121560617273. The next prime is 121560617279. The reversal of 121560617276 is 672716065121.

It is an interprime number because it is at equal distance from previous prime (121560617273) and next prime (121560617279).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121560617273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083950 + ... + 1190826.

It is an arithmetic number, because the mean of its divisors is an integer number (5174676500).

Almost surely, 2^121560617276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121560617276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124192236000).

121560617276 is an abundant number, since it is smaller than the sum of its proper divisors (126823854724).

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

121560617276 is a wasteful number, since it uses less digits than its factorization.

121560617276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107731 (or 107715 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 121560617276 in words is "one hundred twenty-one billion, five hundred sixty million, six hundred seventeen thousand, two hundred seventy-six".