123021013110 has 16 divisors (see below), whose sum is σ = 295250431536. Its totient is φ = 32805603488.

The previous prime is 123021013109. The next prime is 123021013117. The reversal of 123021013110 is 11310120321.

It is a happy number.

It is a super-2 number, since 2×123021013110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123021013110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123021013117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050350189 + ... + 2050350248.

It is an arithmetic number, because the mean of its divisors is an integer number (18453151971).

Almost surely, 2^123021013110 is an apocalyptic number.

123021013110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123021013110 is an abundant number, since it is smaller than the sum of its proper divisors (172229418426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123021013110 is a wasteful number, since it uses less digits than its factorization.

123021013110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100700447.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123021013110 its reverse (11310120321), we get a palindrome (134331133431).

The spelling of 123021013110 in words is "one hundred twenty-three billion, twenty-one million, thirteen thousand, one hundred ten".