121110023011 has 4 divisors (see below), whose sum is σ = 121113371224. Its totient is φ = 121106674800.

The previous prime is 121110022997. The next prime is 121110023059. The reversal of 121110023011 is 110320011121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121110023011 - 2⁷ = 121110022883 is a prime.

It is a super-2 number, since 2×121110023011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121110022982 and 121110023000.

It is not an unprimeable number, because it can be changed into a prime (121110027011) 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, 1619250 + ... + 1692391.

It is an arithmetic number, because the mean of its divisors is an integer number (30278342806).

Almost surely, 2^121110023011 is an apocalyptic number.

121110023011 is a deficient number, since it is larger than the sum of its proper divisors (3348213).

121110023011 is an equidigital number, since it uses as much as digits as its factorization.

121110023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348212.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121110023011 its reverse (110320011121), we get a palindrome (231430034132).

The spelling of 121110023011 in words is "one hundred twenty-one billion, one hundred ten million, twenty-three thousand, eleven".