20021122021022 has 16 divisors (see below), whose sum is σ = 30079755600000. Its totient is φ = 9994537327320.

The previous prime is 20021122020971. The next prime is 20021122021057. The reversal of 20021122021022 is 22012022112002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148216229 + ... + 148351247.

It is an arithmetic number, because the mean of its divisors is an integer number (1879984725000).

Almost surely, 2^{20021122021022} is an apocalyptic number.

20021122021022 is a deficient number, since it is larger than the sum of its proper divisors (10058633578978).

20021122021022 is a wasteful number, since it uses less digits than its factorization.

20021122021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253151.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20021122021022 its reverse (22012022112002), we get a palindrome (42033144133024).

The spelling of 20021122021022 in words is "twenty trillion, twenty-one billion, one hundred twenty-two million, twenty-one thousand, twenty-two".