121623013 has 16 divisors (see below), whose sum is σ = 132134400. Its totient is φ = 111666240.

The previous prime is 121622999. The next prime is 121623053. The reversal of 121623013 is 310326121.

It is not a de Polignac number, because 121623013 - 2¹⁷ = 121491941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121623053) 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, 51895 + ... + 54187.

It is an arithmetic number, because the mean of its divisors is an integer number (8258400).

Almost surely, 2^121623013 is an apocalyptic number.

It is an amenable number.

121623013 is a deficient number, since it is larger than the sum of its proper divisors (10511387).

121623013 is a wasteful number, since it uses less digits than its factorization.

121623013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 121623013 is about 11028.2824138666. The cubic root of 121623013 is about 495.4561832084.

Adding to 121623013 its reverse (310326121), we get a palindrome (431949134).

The spelling of 121623013 in words is "one hundred twenty-one million, six hundred twenty-three thousand, thirteen".