20021121021022 has 32 divisors (see below), whose sum is σ = 32817621847680. Its totient is φ = 9085026115680.

The previous prime is 20021121020969. The next prime is 20021121021037. The reversal of 20021121021022 is 22012012112002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021121020987 and 20021121021005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30412353 + ... + 31063699.

It is an arithmetic number, because the mean of its divisors is an integer number (1025550682740).

Almost surely, 2^{20021121021022} is an apocalyptic number.

20021121021022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021121021022 is a deficient number, since it is larger than the sum of its proper divisors (12796500826658).

20021121021022 is a wasteful number, since it uses less digits than its factorization.

20021121021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653736.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021121021022 its reverse (22012012112002), we get a palindrome (42033133133024).

The spelling of 20021121021022 in words is "twenty trillion, twenty-one billion, one hundred twenty-one million, twenty-one thousand, twenty-two".