1010101112123 has 4 divisors (see below), whose sum is σ = 1014512034240. Its totient is φ = 1005690190008.

The previous prime is 1010101112093. The next prime is 1010101112171. The reversal of 1010101112123 is 3212111010101.

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 1010101112123 - 2¹⁴ = 1010101095739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010101112098 and 1010101112107.

It is not an unprimeable number, because it can be changed into a prime (1010101112023) 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, 2205460715 + ... + 2205461172.

It is an arithmetic number, because the mean of its divisors is an integer number (253628008560).

Almost surely, 2^{1010101112123} is an apocalyptic number.

1010101112123 is a deficient number, since it is larger than the sum of its proper divisors (4410922117).

1010101112123 is an equidigital number, since it uses as much as digits as its factorization.

1010101112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410922116.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1010101112123 its reverse (3212111010101), we get a palindrome (4222212122224).

The spelling of 1010101112123 in words is "one trillion, ten billion, one hundred one million, one hundred twelve thousand, one hundred twenty-three".