2100220100001 has 24 divisors (see below), whose sum is σ = 3110906088576. Its totient is φ = 1364631317280.

The previous prime is 2100220099987. The next prime is 2100220100023. The reversal of 2100220100001 is 1000010220012.

It is not a de Polignac number, because 2100220100001 - 2⁶ = 2100220099937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2100220100201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5681430 + ... + 6039791.

It is an arithmetic number, because the mean of its divisors is an integer number (129621087024).

Almost surely, 2^{2100220100001} is an apocalyptic number.

It is an amenable number.

2100220100001 is a deficient number, since it is larger than the sum of its proper divisors (1010685988575).

2100220100001 is a wasteful number, since it uses less digits than its factorization.

2100220100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11721733 (or 11721730 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2100220100001 its reverse (1000010220012), we get a palindrome (3100230320013).

The spelling of 2100220100001 in words is "two trillion, one hundred billion, two hundred twenty million, one hundred thousand, one".