22002211312 has 40 divisors (see below), whose sum is σ = 44120906240. Its totient is φ = 10618050240.

The previous prime is 22002211279. The next prime is 22002211321. The reversal of 22002211312 is 21311220022.

It is a happy number.

It is a super-2 number, since 2×22002211312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129463 + ... + 246505.

It is an arithmetic number, because the mean of its divisors is an integer number (1103022656).

Almost surely, 2^22002211312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22002211312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22060453120).

22002211312 is an abundant number, since it is smaller than the sum of its proper divisors (22118694928).

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

22002211312 is a wasteful number, since it uses less digits than its factorization.

22002211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117461 (or 117455 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22002211312 its reverse (21311220022), we get a palindrome (43313431334).

The spelling of 22002211312 in words is "twenty-two billion, two million, two hundred eleven thousand, three hundred twelve".