2131100022001 has 4 divisors (see below), whose sum is σ = 2143418519412. Its totient is φ = 2118781524592.

The previous prime is 2131100021971. The next prime is 2131100022061. The reversal of 2131100022001 is 1002200011312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 894066693601 + 1237033328400 = 945551^2 + 1112220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131100022001 - 2¹¹ = 2131100019953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131100022061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6159248446 + ... + 6159248791.

It is an arithmetic number, because the mean of its divisors is an integer number (535854629853).

Almost surely, 2^{2131100022001} is an apocalyptic number.

It is an amenable number.

2131100022001 is a deficient number, since it is larger than the sum of its proper divisors (12318497411).

2131100022001 is a wasteful number, since it uses less digits than its factorization.

2131100022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12318497410.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2131100022001 its reverse (1002200011312), we get a palindrome (3133300033313).

The spelling of 2131100022001 in words is "two trillion, one hundred thirty-one billion, one hundred million, twenty-two thousand, one".