2101211012001 has 4 divisors (see below), whose sum is σ = 2801614682672. Its totient is φ = 1400807341332.

The previous prime is 2101211011981. The next prime is 2101211012023. The reversal of 2101211012001 is 1002101121012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2101211012001 - 2²⁶ = 2101143903137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101211012051) 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, 350201835331 + ... + 350201835336.

It is an arithmetic number, because the mean of its divisors is an integer number (700403670668).

Almost surely, 2^{2101211012001} is an apocalyptic number.

It is an amenable number.

2101211012001 is a deficient number, since it is larger than the sum of its proper divisors (700403670671).

2101211012001 is an equidigital number, since it uses as much as digits as its factorization.

2101211012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700403670670.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2101211012001 its reverse (1002101121012), we get a palindrome (3103312133013).

The spelling of 2101211012001 in words is "two trillion, one hundred one billion, two hundred eleven million, twelve thousand, one".