20010122220222 has 32 divisors (see below), whose sum is σ = 44467096988160. Its totient is φ = 6670016931960.

The previous prime is 20010122220211. The next prime is 20010122220227. The reversal of 20010122220222 is 22202222101002.

20010122220222 is a `hidden beast` number, since 200 + 1 + 0 + 1 + 22 + 220 + 222 = 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 = 20010122220195 and 20010122220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010122220227) 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, 21294697 + ... + 22214507.

It is an arithmetic number, because the mean of its divisors is an integer number (1389596780880).

Almost surely, 2^{20010122220222} is an apocalyptic number.

20010122220222 is an abundant number, since it is smaller than the sum of its proper divisors (24456974767938).

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

20010122220222 is a wasteful number, since it uses less digits than its factorization.

20010122220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322685 (or 1322679 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20010122220222 its reverse (22202222101002), we get a palindrome (42212344321224).

The spelling of 20010122220222 in words is "twenty trillion, ten billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty-two".