2102012211023 has 4 divisors (see below), whose sum is σ = 2225659988160. Its totient is φ = 1978364433888.

The previous prime is 2102012211017. The next prime is 2102012211029. The reversal of 2102012211023 is 3201122102012.

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

It is an interprime number because it is at equal distance from previous prime (2102012211017) and next prime (2102012211029).

It is not a de Polignac number, because 2102012211023 - 2⁶ = 2102012210959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 123647777119 = 2102012211023 / (2 + 1 + 0 + 2 + 0 + 1 + 2 + 2 + 1 + 1 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102012210992 and 2102012211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102012211029) 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, 61823888543 + ... + 61823888576.

It is an arithmetic number, because the mean of its divisors is an integer number (556414997040).

Almost surely, 2^{2102012211023} is an apocalyptic number.

2102012211023 is a deficient number, since it is larger than the sum of its proper divisors (123647777137).

2102012211023 is a wasteful number, since it uses less digits than its factorization.

2102012211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123647777136.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2102012211023 its reverse (3201122102012), we get a palindrome (5303134313035).

The spelling of 2102012211023 in words is "two trillion, one hundred two billion, twelve million, two hundred eleven thousand, twenty-three".