220220211201123 has 16 divisors (see below), whose sum is σ = 335574222045440. Its totient is φ = 125839908105696.

The previous prime is 220220211201091. The next prime is 220220211201149. The reversal of 220220211201123 is 321102112022022.

It is not a de Polignac number, because 220220211201123 - 2⁵ = 220220211201091 is a prime.

It is a super-2 number, since 2×220220211201123² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 220220211201123.

It is not an unprimeable number, because it can be changed into a prime (220220211201223) 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, 4326036 + ... + 21427902.

It is an arithmetic number, because the mean of its divisors is an integer number (20973388877840).

Almost surely, 2^{220220211201123} is an apocalyptic number.

220220211201123 is a deficient number, since it is larger than the sum of its proper divisors (115354010844317).

220220211201123 is a wasteful number, since it uses less digits than its factorization.

220220211201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17715066.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 220220211201123 its reverse (321102112022022), we get a palindrome (541322323223145).

The spelling of 220220211201123 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred eleven million, two hundred one thousand, one hundred twenty-three".