20012221211022 has 32 divisors (see below), whose sum is σ = 44611891696800. Its totient is φ = 6649697052864.

The previous prime is 20012221210999. The next prime is 20012221211029. The reversal of 20012221211022 is 22011212221002.

It is a happy number.

20012221211022 is a `hidden beast` number, since 200 + 12 + 221 + 211 + 0 + 22 = 666.

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 = 20012221210986 and 20012221211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012221211029) 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, 584520247 + ... + 584554482.

It is an arithmetic number, because the mean of its divisors is an integer number (1394121615525).

Almost surely, 2^{20012221211022} is an apocalyptic number.

20012221211022 is an abundant number, since it is smaller than the sum of its proper divisors (24599670485778).

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

20012221211022 is a wasteful number, since it uses less digits than its factorization.

20012221211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169075057 (or 1169075051 counting only the distinct ones).

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

Adding to 20012221211022 its reverse (22011212221002), we get a palindrome (42023433432024).

The spelling of 20012221211022 in words is "twenty trillion, twelve billion, two hundred twenty-one million, two hundred eleven thousand, twenty-two".