10101012123 has 24 divisors (see below), whose sum is σ = 14227606800. Its totient is φ = 6373555776.

The previous prime is 10101012107. The next prime is 10101012151. The reversal of 10101012123 is 32121010101.

10101012123 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 10101012123 - 2⁴ = 10101012107 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 10101012099 and 10101012108.

It is not an unprimeable number, because it can be changed into a prime (10101012923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1327213 + ... + 1334801.

It is an arithmetic number, because the mean of its divisors is an integer number (592816950).

Almost surely, 2^10101012123 is an apocalyptic number.

10101012123 is a deficient number, since it is larger than the sum of its proper divisors (4126594677).

10101012123 is a wasteful number, since it uses less digits than its factorization.

10101012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8859 (or 8840 counting only the distinct ones).

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

Adding to 10101012123 its reverse (32121010101), we get a palindrome (42222022224).

The spelling of 10101012123 in words is "ten billion, one hundred one million, twelve thousand, one hundred twenty-three".