121010112123 has 16 divisors (see below), whose sum is σ = 166929826080. Its totient is φ = 77882547456.

The previous prime is 121010112103. The next prime is 121010112133. The reversal of 121010112123 is 321211010121.

It is not a de Polignac number, because 121010112123 - 2⁶ = 121010112059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121010112103) 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, 720711 + ... + 872607.

It is an arithmetic number, because the mean of its divisors is an integer number (10433114130).

Almost surely, 2^121010112123 is an apocalyptic number.

121010112123 is a deficient number, since it is larger than the sum of its proper divisors (45919713957).

121010112123 is a wasteful number, since it uses less digits than its factorization.

121010112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161086.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121010112123 its reverse (321211010121), we get a palindrome (442221122244).

The spelling of 121010112123 in words is "one hundred twenty-one billion, ten million, one hundred twelve thousand, one hundred twenty-three".