20101221120022 has 32 divisors (see below), whose sum is σ = 36496283635008. Its totient is φ = 8105825903616.

The previous prime is 20101221119983. The next prime is 20101221120083. The reversal of 20101221120022 is 22002112210102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20101221119978 and 20101221120005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10745463 + ... + 12476674.

It is an arithmetic number, because the mean of its divisors is an integer number (1140508863594).

Almost surely, 2^{20101221120022} is an apocalyptic number.

20101221120022 is a deficient number, since it is larger than the sum of its proper divisors (16395062514986).

20101221120022 is a wasteful number, since it uses less digits than its factorization.

20101221120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23225800.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20101221120022 its reverse (22002112210102), we get a palindrome (42103333330124).

The spelling of 20101221120022 in words is "twenty trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty thousand, twenty-two".