121120623 has 32 divisors (see below), whose sum is σ = 194201280. Its totient is φ = 74165760.

The previous prime is 121120621. The next prime is 121120639. The reversal of 121120623 is 326021121.

121120623 is a `hidden beast` number, since 1 + 21 + 1 + 20 + 623 = 666.

It is not a de Polignac number, because 121120623 - 2¹ = 121120621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121120596 and 121120605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120621) 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, 81043 + ... + 82523.

It is an arithmetic number, because the mean of its divisors is an integer number (6068790).

Almost surely, 2^121120623 is an apocalyptic number.

121120623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121120623 is a deficient number, since it is larger than the sum of its proper divisors (73080657).

121120623 is a wasteful number, since it uses less digits than its factorization.

121120623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1730 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 121120623 is about 11005.4814978719. The cubic root of 121120623 is about 494.7730456374.

Adding to 121120623 its reverse (326021121), we get a palindrome (447141744).

The spelling of 121120623 in words is "one hundred twenty-one million, one hundred twenty thousand, six hundred twenty-three".