22101111234 has 12 divisors (see below), whose sum is σ = 47885741046. Its totient is φ = 7367037072.

The previous prime is 22101111211. The next prime is 22101111251. The reversal of 22101111234 is 43211110122.

It can be written as a sum of positive squares in only one way, i.e., 22083446025 + 17665209 = 148605^2 + 4203^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1227839513 = 22101111234 / (2 + 2 + 1 + 0 + 1 + 1 + 1 + 1 + 2 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613919739 + ... + 613919774.

Almost surely, 2^22101111234 is an apocalyptic number.

22101111234 is an abundant number, since it is smaller than the sum of its proper divisors (25784629812).

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

22101111234 is a wasteful number, since it uses less digits than its factorization.

22101111234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227839521 (or 1227839518 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22101111234 its reverse (43211110122), we get a palindrome (65312221356).

The spelling of 22101111234 in words is "twenty-two billion, one hundred one million, one hundred eleven thousand, two hundred thirty-four".