22001221110102 has 96 divisors (see below), whose sum is σ = 49544257985376. Its totient is φ = 6474345292800.

The previous prime is 22001221110101. The next prime is 22001221110137. The reversal of 22001221110102 is 20101112210022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001221110101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319374702 + ... + 319443582.

It is an arithmetic number, because the mean of its divisors is an integer number (516086020681).

Almost surely, 2^{22001221110102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22001221110102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24772128992688).

22001221110102 is an abundant number, since it is smaller than the sum of its proper divisors (27543036875274).

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

22001221110102 is a wasteful number, since it uses less digits than its factorization.

22001221110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76686 (or 76663 counting only the distinct ones).

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

Adding to 22001221110102 its reverse (20101112210022), we get a palindrome (42102333320124).

The spelling of 22001221110102 in words is "twenty-two trillion, one billion, two hundred twenty-one million, one hundred ten thousand, one hundred two".