121123013 has 4 divisors (see below), whose sum is σ = 132134208. Its totient is φ = 110111820.

The previous prime is 121123007. The next prime is 121123021. The reversal of 121123013 is 310321121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121123013 - 2⁶ = 121122949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505581 + ... + 5505602.

It is an arithmetic number, because the mean of its divisors is an integer number (33033552).

Almost surely, 2^121123013 is an apocalyptic number.

It is an amenable number.

121123013 is a deficient number, since it is larger than the sum of its proper divisors (11011195).

121123013 is a wasteful number, since it uses less digits than its factorization.

121123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011194.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121123013 is about 11005.5900795914. The cubic root of 121123013 is about 494.7762999684.

Adding to 121123013 its reverse (310321121), we get a palindrome (431444134).

The spelling of 121123013 in words is "one hundred twenty-one million, one hundred twenty-three thousand, thirteen".