212133111031123 has 16 divisors (see below), whose sum is σ = 215207124618240. Its totient is φ = 209061509781600.

The previous prime is 212133111031103. The next prime is 212133111031151. The reversal of 212133111031123 is 321130111331212.

It is a cyclic number.

It is not a de Polignac number, because 212133111031123 - 2⁹ = 212133111030611 is a prime.

It is a super-2 number, since 2×212133111031123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212133111031103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1880439586 + ... + 1880552392.

It is an arithmetic number, because the mean of its divisors is an integer number (13450445288640).

Almost surely, 2^{212133111031123} is an apocalyptic number.

212133111031123 is a deficient number, since it is larger than the sum of its proper divisors (3074013587117).

212133111031123 is a wasteful number, since it uses less digits than its factorization.

212133111031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123258.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 212133111031123 its reverse (321130111331212), we get a palindrome (533263222362335).

The spelling of 212133111031123 in words is "two hundred twelve trillion, one hundred thirty-three billion, one hundred eleven million, thirty-one thousand, one hundred twenty-three".