20121020222022 has 48 divisors (see below), whose sum is σ = 46769165810640. Its totient is φ = 6475730641632.

The previous prime is 20121020221943. The next prime is 20121020222027. The reversal of 20121020222022 is 22022202012102.

20121020222022 is a `hidden beast` number, since 201 + 21 + 0 + 202 + 220 + 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 = 20121020221986 and 20121020222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121020222027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 713801013 + ... + 713829200.

It is an arithmetic number, because the mean of its divisors is an integer number (974357621055).

Almost surely, 2^{20121020222022} is an apocalyptic number.

20121020222022 is an abundant number, since it is smaller than the sum of its proper divisors (26648145588618).

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

20121020222022 is a wasteful number, since it uses less digits than its factorization.

20121020222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427630259 (or 1427630247 counting only the distinct ones).

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

Adding to 20121020222022 its reverse (22022202012102), we get a palindrome (42143222234124).

The spelling of 20121020222022 in words is "twenty trillion, one hundred twenty-one billion, twenty million, two hundred twenty-two thousand, twenty-two".