21622201362 has 48 divisors (see below), whose sum is σ = 49434684000. Its totient is φ = 6811324992.

The previous prime is 21622201361. The next prime is 21622201369. The reversal of 21622201362 is 26310222612.

It is a happy number.

21622201362 is a `hidden beast` number, since 2 + 1 + 622 + 2 + 0 + 1 + 36 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (21622201361) 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, 62589 + ... + 217167.

It is an arithmetic number, because the mean of its divisors is an integer number (1029889250).

Almost surely, 2^21622201362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21622201362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24717342000).

21622201362 is an abundant number, since it is smaller than the sum of its proper divisors (27812482638).

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

21622201362 is a wasteful number, since it uses less digits than its factorization.

21622201362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155015 (or 155012 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 21622201362 its reverse (26310222612), we get a palindrome (47932423974).

The spelling of 21622201362 in words is "twenty-one billion, six hundred twenty-two million, two hundred one thousand, three hundred sixty-two".