22021010022 has 64 divisors (see below), whose sum is σ = 50436587520. Its totient is φ = 6348285600.

The previous prime is 22021009979. The next prime is 22021010057. The reversal of 22021010022 is 22001012022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29503 + ... + 211925.

It is an arithmetic number, because the mean of its divisors is an integer number (788071680).

Almost surely, 2^22021010022 is an apocalyptic number.

22021010022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021010022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25218293760).

22021010022 is an abundant number, since it is smaller than the sum of its proper divisors (28415577498).

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

22021010022 is a wasteful number, since it uses less digits than its factorization.

22021010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182529.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22021010022 its reverse (22001012022), we get a palindrome (44022022044).

The spelling of 22021010022 in words is "twenty-two billion, twenty-one million, ten thousand, twenty-two".