20001002001022 has 16 divisors (see below), whose sum is σ = 34607875294080. Its totient is φ = 8491747177368.

The previous prime is 20001002001011. The next prime is 20001002001023. The reversal of 20001002001022 is 22010020010002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001002001023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6675900372 + ... + 6675903367.

It is an arithmetic number, because the mean of its divisors is an integer number (2162992205880).

Almost surely, 2^{20001002001022} is an apocalyptic number.

20001002001022 is a deficient number, since it is larger than the sum of its proper divisors (14606873293058).

20001002001022 is a wasteful number, since it uses less digits than its factorization.

20001002001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13351803855.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001002001022 its reverse (22010020010002), we get a palindrome (42011022011024).

The spelling of 20001002001022 in words is "twenty trillion, one billion, two million, one thousand, twenty-two".