20002221020001 has 32 divisors (see below), whose sum is σ = 29157791182848. Its totient is φ = 12096043424640.

The previous prime is 20002221019969. The next prime is 20002221020027. The reversal of 20002221020001 is 10002012220002.

It is not a de Polignac number, because 20002221020001 - 2⁵ = 20002221019969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20002221020071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125643885 + ... + 125802981.

It is an arithmetic number, because the mean of its divisors is an integer number (911180974464).

Almost surely, 2^{20002221020001} is an apocalyptic number.

It is an amenable number.

20002221020001 is a deficient number, since it is larger than the sum of its proper divisors (9155570162847).

20002221020001 is a wasteful number, since it uses less digits than its factorization.

20002221020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167421.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20002221020001 its reverse (10002012220002), we get a palindrome (30004233240003).

The spelling of 20002221020001 in words is "twenty trillion, two billion, two hundred twenty-one million, twenty thousand, one".