121668495 has 32 divisors (see below), whose sum is σ = 220684800. Its totient is φ = 56744064.

The previous prime is 121668493. The next prime is 121668509. The reversal of 121668495 is 594866121.

It is not a de Polignac number, because 121668495 - 2¹ = 121668493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121668493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12715 + ... + 20124.

It is an arithmetic number, because the mean of its divisors is an integer number (6896400).

Almost surely, 2^121668495 is an apocalyptic number.

121668495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121668495 is a deficient number, since it is larger than the sum of its proper divisors (99016305).

121668495 is a wasteful number, since it uses less digits than its factorization.

121668495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32879.

The product of its digits is 103680, while the sum is 42.

The square root of 121668495 is about 11030.3442829315. The cubic root of 121668495 is about 495.5179355835.

The spelling of 121668495 in words is "one hundred twenty-one million, six hundred sixty-eight thousand, four hundred ninety-five".