22012021101210 has 128 divisors (see below), whose sum is σ = 61888509112320. Its totient is φ = 4905673790976.

The previous prime is 22012021101193. The next prime is 22012021101211. The reversal of 22012021101210 is 1210112021022.

It is a super-2 number, since 2×22012021101210² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22012021101210.

It is not an unprimeable number, because it can be changed into a prime (22012021101211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2996019 + ... + 7280121.

It is an arithmetic number, because the mean of its divisors is an integer number (483503977440).

Almost surely, 2^{22012021101210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012021101210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30944254556160).

22012021101210 is an abundant number, since it is smaller than the sum of its proper divisors (39876488011110).

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

22012021101210 is a wasteful number, since it uses less digits than its factorization.

22012021101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284732.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22012021101210 its reverse (1210112021022), we get a palindrome (23222133122232).

The spelling of 22012021101210 in words is "twenty-two trillion, twelve billion, twenty-one million, one hundred one thousand, two hundred ten".