22011321042 has 24 divisors (see below), whose sum is σ = 48499523280. Its totient is φ = 7212748920.

The previous prime is 22011321023. The next prime is 22011321091. The reversal of 22011321042 is 24012311022.

It is a happy number.

It is a super-3 number, since 3×22011321042³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10362084 + ... + 10364207.

It is an arithmetic number, because the mean of its divisors is an integer number (2020813470).

Almost surely, 2^22011321042 is an apocalyptic number.

22011321042 is an abundant number, since it is smaller than the sum of its proper divisors (26488202238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22011321042 is a wasteful number, since it uses less digits than its factorization.

22011321042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20726358 (or 20726355 counting only the distinct ones).

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

Adding to 22011321042 its reverse (24012311022), we get a palindrome (46023632064).

The spelling of 22011321042 in words is "twenty-two billion, eleven million, three hundred twenty-one thousand, forty-two".