20101221013222 has 16 divisors (see below), whose sum is σ = 30156540019200. Its totient is φ = 10049041150720.

The previous prime is 20101221013213. The next prime is 20101221013283. The reversal of 20101221013222 is 22231012210102.

It is a self number, because there is not a number n which added to its sum of digits gives 20101221013222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551017179 + ... + 551053657.

It is an arithmetic number, because the mean of its divisors is an integer number (1884783751200).

Almost surely, 2^{20101221013222} is an apocalyptic number.

20101221013222 is a deficient number, since it is larger than the sum of its proper divisors (10055319005978).

20101221013222 is a wasteful number, since it uses less digits than its factorization.

20101221013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71951.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20101221013222 its reverse (22231012210102), we get a palindrome (42332233223324).

The spelling of 20101221013222 in words is "twenty trillion, one hundred one billion, two hundred twenty-one million, thirteen thousand, two hundred twenty-two".