223202012121 has 48 divisors (see below), whose sum is σ = 352910675520. Its totient is φ = 134813669760.

The previous prime is 223202012083. The next prime is 223202012123. The reversal of 223202012121 is 121210202322.

223202012121 is a `hidden beast` number, since 22 + 320 + 201 + 2 + 121 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-223202012121 is a prime.

It is a super-3 number, since 3×223202012121³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223202012094 and 223202012103.

It is not an unprimeable number, because it can be changed into a prime (223202012123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67167166 + ... + 67170488.

It is an arithmetic number, because the mean of its divisors is an integer number (7352305740).

Almost surely, 2^223202012121 is an apocalyptic number.

It is an amenable number.

223202012121 is a deficient number, since it is larger than the sum of its proper divisors (129708663399).

223202012121 is a wasteful number, since it uses less digits than its factorization.

223202012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5446 (or 5443 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 223202012121 its reverse (121210202322), we get a palindrome (344412214443).

It can be divided in two parts, 22320201 and 2121, that added together give a palindrome (22322322).

The spelling of 223202012121 in words is "two hundred twenty-three billion, two hundred two million, twelve thousand, one hundred twenty-one".