121320610 has 16 divisors (see below), whose sum is σ = 220499136. Its totient is φ = 48056688.

The previous prime is 121320593. The next prime is 121320623. The reversal of 121320610 is 16023121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57864 + ... + 59923.

It is an arithmetic number, because the mean of its divisors is an integer number (13781196).

Almost surely, 2^121320610 is an apocalyptic number.

121320610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121320610 is a deficient number, since it is larger than the sum of its proper divisors (99178526).

121320610 is a wasteful number, since it uses less digits than its factorization.

121320610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117897.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 121320610 is about 11014.5635410578. The cubic root of 121320610 is about 495.0452089444.

Adding to 121320610 its reverse (16023121), we get a palindrome (137343731).

The spelling of 121320610 in words is "one hundred twenty-one million, three hundred twenty thousand, six hundred ten".