121622865285 has 32 divisors (see below), whose sum is σ = 202862822400. Its totient is φ = 62151552000.

The previous prime is 121622865271. The next prime is 121622865293. The reversal of 121622865285 is 582568226121.

It is not a de Polignac number, because 121622865285 - 2¹² = 121622861189 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1247860 + ... + 1341789.

It is an arithmetic number, because the mean of its divisors is an integer number (6339463200).

Almost surely, 2^121622865285 is an apocalyptic number.

121622865285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121622865285 is a deficient number, since it is larger than the sum of its proper divisors (81239957115).

121622865285 is a wasteful number, since it uses less digits than its factorization.

121622865285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589789.

The product of its digits is 921600, while the sum is 48.

The spelling of 121622865285 in words is "one hundred twenty-one billion, six hundred twenty-two million, eight hundred sixty-five thousand, two hundred eighty-five".