2100011211001 has 16 divisors (see below), whose sum is σ = 2297942083008. Its totient is φ = 1903251571200.

The previous prime is 2100011210951. The next prime is 2100011211007. The reversal of 2100011211001 is 1001121100012.

It is a cyclic number.

It is not a de Polignac number, because 2100011211001 - 2¹⁵ = 2100011178233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100011211007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50998861 + ... + 51040021.

It is an arithmetic number, because the mean of its divisors is an integer number (143621380188).

Almost surely, 2^{2100011211001} is an apocalyptic number.

It is an amenable number.

2100011211001 is a deficient number, since it is larger than the sum of its proper divisors (197930872007).

2100011211001 is a wasteful number, since it uses less digits than its factorization.

2100011211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55272.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2100011211001 its reverse (1001121100012), we get a palindrome (3101132311013).

The spelling of 2100011211001 in words is "two trillion, one hundred billion, eleven million, two hundred eleven thousand, one".