2001202022101 has 2 divisors, whose sum is σ = 2001202022102. Its totient is φ = 2001202022100.

The previous prime is 2001202022093. The next prime is 2001202022189. The reversal of 2001202022101 is 1012202021002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1583950619601 + 417251402500 = 1258551^2 + 645950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001202022101 - 2³ = 2001202022093 is a prime.

It is a super-2 number, since 2×2001202022101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001202026101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000601011050 + 1000601011051.

It is an arithmetic number, because the mean of its divisors is an integer number (1000601011051).

Almost surely, 2^{2001202022101} is an apocalyptic number.

It is an amenable number.

2001202022101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001202022101 is an equidigital number, since it uses as much as digits as its factorization.

2001202022101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001202022101 its reverse (1012202021002), we get a palindrome (3013404043103).

The spelling of 2001202022101 in words is "two trillion, one billion, two hundred two million, twenty-two thousand, one hundred one".