20021100111022 has 16 divisors (see below), whose sum is σ = 30670789419072. Its totient is φ = 9797505971040.

The previous prime is 20021100110993. The next prime is 20021100111043. The reversal of 20021100111022 is 22011100112002.

It is a junction number, because it is equal to n+sod(n) for n = 20021100110993 and 20021100111011.

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, 20832448 + ... + 21772300.

It is an arithmetic number, because the mean of its divisors is an integer number (1916924338692).

Almost surely, 2^{20021100111022} is an apocalyptic number.

20021100111022 is a deficient number, since it is larger than the sum of its proper divisors (10649689308050).

20021100111022 is a wasteful number, since it uses less digits than its factorization.

20021100111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166523.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021100111022 its reverse (22011100112002), we get a palindrome (42032200223024).

The spelling of 20021100111022 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred eleven thousand, twenty-two".