2001222020101 has 16 divisors (see below), whose sum is σ = 2008811577600. Its totient is φ = 1993652517888.

The previous prime is 2001222020071. The next prime is 2001222020131. The reversal of 2001222020101 is 1010202221002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2001222020071) and next prime (2001222020131).

It is a cyclic number.

It is not a de Polignac number, because 2001222020101 - 2¹⁵ = 2001221987333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880430901 + ... + 880433173.

It is an arithmetic number, because the mean of its divisors is an integer number (125550723600).

Almost surely, 2^{2001222020101} is an apocalyptic number.

It is an amenable number.

2001222020101 is a deficient number, since it is larger than the sum of its proper divisors (7589557499).

2001222020101 is a wasteful number, since it uses less digits than its factorization.

2001222020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388.

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

Adding to 2001222020101 its reverse (1010202221002), we get a palindrome (3011424241103).

The spelling of 2001222020101 in words is "two trillion, one billion, two hundred twenty-two million, twenty thousand, one hundred one".