121660630 has 96 divisors (see below), whose sum is σ = 279236160. Its totient is φ = 37820160.

The previous prime is 121660589. The next prime is 121660633. The reversal of 121660630 is 36066121.

It is a junction number, because it is equal to n+sod(n) for n = 121660595 and 121660604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121660633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 452136 + ... + 452404.

It is an arithmetic number, because the mean of its divisors is an integer number (2908710).

Almost surely, 2^121660630 is an apocalyptic number.

121660630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121660630 is an abundant number, since it is smaller than the sum of its proper divisors (157575530).

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

121660630 is a wasteful number, since it uses less digits than its factorization.

121660630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 121660630 is about 11029.9877606460. The cubic root of 121660630 is about 495.5072581205.

The spelling of 121660630 in words is "one hundred twenty-one million, six hundred sixty thousand, six hundred thirty".