101112121210123 has 4 divisors (see below), whose sum is σ = 102769696967728. Its totient is φ = 99454545452520.

The previous prime is 101112121210109. The next prime is 101112121210141. The reversal of 101112121210123 is 321012121211101.

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 101112121210123 - 2²⁹ = 101111584339211 is a prime.

It is a super-2 number, since 2×101112121210123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101112121210123.

It is not an unprimeable number, because it can be changed into a prime (101112121210523) 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, 828787878711 + ... + 828787878832.

It is an arithmetic number, because the mean of its divisors is an integer number (25692424241932).

Almost surely, 2^{101112121210123} is an apocalyptic number.

101112121210123 is a deficient number, since it is larger than the sum of its proper divisors (1657575757605).

101112121210123 is an equidigital number, since it uses as much as digits as its factorization.

101112121210123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657575757604.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 101112121210123 its reverse (321012121211101), we get a palindrome (422124242421224).

The spelling of 101112121210123 in words is "one hundred one trillion, one hundred twelve billion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-three".