2111202220123 has 4 divisors (see below), whose sum is σ = 2111208022008. Its totient is φ = 2111196418240.

The previous prime is 2111202220103. The next prime is 2111202220129. The reversal of 2111202220123 is 3210222021112.

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 2111202220123 - 2¹³ = 2111202211931 is a prime.

It is a super-2 number, since 2×2111202220123² (a number of 25 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 2111202220123.

It is not an unprimeable number, because it can be changed into a prime (2111202220129) 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, 2315773 + ... + 3095998.

It is an arithmetic number, because the mean of its divisors is an integer number (527802005502).

Almost surely, 2^{2111202220123} is an apocalyptic number.

2111202220123 is a deficient number, since it is larger than the sum of its proper divisors (5801885).

2111202220123 is an equidigital number, since it uses as much as digits as its factorization.

2111202220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801884.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2111202220123 its reverse (3210222021112), we get a palindrome (5321424241235).

The spelling of 2111202220123 in words is "two trillion, one hundred eleven billion, two hundred two million, two hundred twenty thousand, one hundred twenty-three".