2211220101123 has 24 divisors (see below), whose sum is σ = 3484436011056. Its totient is φ = 1340099092800.

The previous prime is 2211220101119. The next prime is 2211220101163. The reversal of 2211220101123 is 3211010221122.

2211220101123 is a `hidden beast` number, since 221 + 1 + 220 + 101 + 123 = 666.

It is not a de Polignac number, because 2211220101123 - 2² = 2211220101119 is a prime.

It is a super-2 number, since 2×2211220101123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211220101096 and 2211220101105.

It is not an unprimeable number, because it can be changed into a prime (2211220101163) 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, 3911161 + ... + 4440677.

It is an arithmetic number, because the mean of its divisors is an integer number (145184833794).

Almost surely, 2^{2211220101123} is an apocalyptic number.

2211220101123 is a deficient number, since it is larger than the sum of its proper divisors (1273215909933).

2211220101123 is a wasteful number, since it uses less digits than its factorization.

2211220101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571715 (or 571712 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2211220101123 its reverse (3211010221122), we get a palindrome (5422230322245).

The spelling of 2211220101123 in words is "two trillion, two hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred twenty-three".