222212123011 has 4 divisors (see below), whose sum is σ = 222456045024. Its totient is φ = 221968201000.

The previous prime is 222212122949. The next prime is 222212123041. The reversal of 222212123011 is 110321212222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222212123011 - 2²¹ = 222210025859 is a prime.

It is a super-2 number, since 2×222212123011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222212123011.

It is not an unprimeable number, because it can be changed into a prime (222212123041) 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, 121959640 + ... + 121961461.

It is an arithmetic number, because the mean of its divisors is an integer number (55614011256).

Almost surely, 2^222212123011 is an apocalyptic number.

222212123011 is a deficient number, since it is larger than the sum of its proper divisors (243922013).

222212123011 is an equidigital number, since it uses as much as digits as its factorization.

222212123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243922012.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222212123011 its reverse (110321212222), we get a palindrome (332533335233).

The spelling of 222212123011 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred twenty-three thousand, eleven".