20121222222102 has 32 divisors (see below), whose sum is σ = 42598257166080. Its totient is φ = 6325195756320.

The previous prime is 20121222222041. The next prime is 20121222222103. The reversal of 20121222222102 is 20122222212102.

It is a super-2 number, since 2×20121222222102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121222222103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344634474 + ... + 1344649437.

It is an arithmetic number, because the mean of its divisors is an integer number (1331195536440).

Almost surely, 2^{20121222222102} is an apocalyptic number.

20121222222102 is an abundant number, since it is smaller than the sum of its proper divisors (22477034943978).

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

20121222222102 is a wasteful number, since it uses less digits than its factorization.

20121222222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689283988.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20121222222102 its reverse (20122222212102), we get a palindrome (40243444434204).

The spelling of 20121222222102 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred two".