22211237052 has 72 divisors (see below), whose sum is σ = 59537159136. Its totient is φ = 6957748224.

The previous prime is 22211237051. The next prime is 22211237117. The reversal of 22211237052 is 25073211222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211237051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384913 + ... + 438839.

It is an arithmetic number, because the mean of its divisors is an integer number (826904988).

Almost surely, 2^22211237052 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 22211237052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29768579568).

22211237052 is an abundant number, since it is smaller than the sum of its proper divisors (37325922084).

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

22211237052 is a wasteful number, since it uses less digits than its factorization.

22211237052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54627 (or 54622 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 22211237052 its reverse (25073211222), we get a palindrome (47284448274).

The spelling of 22211237052 in words is "twenty-two billion, two hundred eleven million, two hundred thirty-seven thousand, fifty-two".