222021021123 has 48 divisors (see below), whose sum is σ = 362891827584. Its totient is φ = 129628356480.

The previous prime is 222021021107. The next prime is 222021021181. The reversal of 222021021123 is 321120120222.

222021021123 is a `hidden beast` number, since 2 + 220 + 210 + 211 + 23 = 666.

It is not a de Polignac number, because 222021021123 - 2⁴ = 222021021107 is a prime.

It is a super-2 number, since 2×222021021123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222021021096 and 222021021105.

It is not an unprimeable number, because it can be changed into a prime (222021021193) 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, 46461 + ... + 667982.

It is an arithmetic number, because the mean of its divisors is an integer number (7560246408).

Almost surely, 2^222021021123 is an apocalyptic number.

222021021123 is a deficient number, since it is larger than the sum of its proper divisors (140870806461).

222021021123 is a wasteful number, since it uses less digits than its factorization.

222021021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714576 (or 714573 counting only the distinct ones).

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

Adding to 222021021123 its reverse (321120120222), we get a palindrome (543141141345).

Subtracting 222021021123 from its reverse (321120120222), we obtain a palindrome (99099099099).

The spelling of 222021021123 in words is "two hundred twenty-two billion, twenty-one million, twenty-one thousand, one hundred twenty-three".