222123213011 has 4 divisors (see below), whose sum is σ = 253855100592. Its totient is φ = 190391325432.

The previous prime is 222123212957. The next prime is 222123213043. The reversal of 222123213011 is 110312321222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110312321222 = 2 ⋅55156160611.

It is not a de Polignac number, because 222123213011 - 2²² = 222119018707 is a prime.

It is a super-2 number, since 2×222123213011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222123213311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15865943780 + ... + 15865943793.

It is an arithmetic number, because the mean of its divisors is an integer number (63463775148).

Almost surely, 2^222123213011 is an apocalyptic number.

222123213011 is a deficient number, since it is larger than the sum of its proper divisors (31731887581).

222123213011 is an equidigital number, since it uses as much as digits as its factorization.

222123213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31731887580.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 222123213011 its reverse (110312321222), we get a palindrome (332435534233).

The spelling of 222123213011 in words is "two hundred twenty-two billion, one hundred twenty-three million, two hundred thirteen thousand, eleven".