23221222311 has 32 divisors (see below), whose sum is σ = 36354567168. Its totient is φ = 12905844480.

The previous prime is 23221222261. The next prime is 23221222313. The reversal of 23221222311 is 11322212232.

It is not a de Polignac number, because 23221222311 - 2⁶ = 23221222247 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221222313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3557731 + ... + 3564251.

It is an arithmetic number, because the mean of its divisors is an integer number (1136080224).

Almost surely, 2^23221222311 is an apocalyptic number.

23221222311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23221222311 is a deficient number, since it is larger than the sum of its proper divisors (13133344857).

23221222311 is a wasteful number, since it uses less digits than its factorization.

23221222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151.

The product of its digits is 576, while the sum is 21.

Adding to 23221222311 its reverse (11322212232), we get a palindrome (34543434543).

The spelling of 23221222311 in words is "twenty-three billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred eleven".