2100212121001 has 8 divisors (see below), whose sum is σ = 2108240576640. Its totient is φ = 2092195767648.

The previous prime is 2100212120927. The next prime is 2100212121023. The reversal of 2100212121001 is 1001212120012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100212121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100212121071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2677756 + ... + 3372061.

It is an arithmetic number, because the mean of its divisors is an integer number (263530072080).

Almost surely, 2^{2100212121001} is an apocalyptic number.

It is an amenable number.

2100212121001 is a deficient number, since it is larger than the sum of its proper divisors (8028455639).

2100212121001 is an equidigital number, since it uses as much as digits as its factorization.

2100212121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051143.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100212121001 its reverse (1001212120012), we get a palindrome (3101424241013).

The spelling of 2100212121001 in words is "two trillion, one hundred billion, two hundred twelve million, one hundred twenty-one thousand, one".