20011122212022 has 48 divisors (see below), whose sum is σ = 43891389425520. Its totient is φ = 6588386678016.

The previous prime is 20011122211957. The next prime is 20011122212047. The reversal of 20011122212022 is 22021222111002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20011122211986 and 20011122212004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5164528 + ... + 8166675.

It is an arithmetic number, because the mean of its divisors is an integer number (914403946365).

Almost surely, 2^{20011122212022} is an apocalyptic number.

20011122212022 is an abundant number, since it is smaller than the sum of its proper divisors (23880267213498).

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

20011122212022 is a wasteful number, since it uses less digits than its factorization.

20011122212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13332237 (or 13332234 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20011122212022 its reverse (22021222111002), we get a palindrome (42032344323024).

The spelling of 20011122212022 in words is "twenty trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, twenty-two".