121602660 has 48 divisors (see below), whose sum is σ = 358411200. Its totient is φ = 30720384.

The previous prime is 121602659. The next prime is 121602661. The reversal of 121602660 is 66206121.

It is an interprime number because it is at equal distance from previous prime (121602659) and next prime (121602661).

It is a self number, because there is not a number n which added to its sum of digits gives 121602660.

It is not an unprimeable number, because it can be changed into a prime (121602661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52195 + ... + 54474.

It is an arithmetic number, because the mean of its divisors is an integer number (7466900).

Almost surely, 2^121602660 is an apocalyptic number.

121602660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121602660 is an abundant number, since it is smaller than the sum of its proper divisors (236808540).

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

121602660 is a wasteful number, since it uses less digits than its factorization.

121602660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106700 (or 106698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 121602660 is about 11027.3596114392. The cubic root of 121602660 is about 495.4285442992.

Adding to 121602660 its reverse (66206121), we get a palindrome (187808781).

The spelling of 121602660 in words is "one hundred twenty-one million, six hundred two thousand, six hundred sixty".