2100211201021 has 8 divisors (see below), whose sum is σ = 2132055036288. Its totient is φ = 2068430238000.

The previous prime is 2100211201009. The next prime is 2100211201031. The reversal of 2100211201021 is 1201021120012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100211201021 - 2¹⁷ = 2100211069949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100211200992 and 2100211201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100211201031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15650745 + ... + 15784366.

It is an arithmetic number, because the mean of its divisors is an integer number (266506879536).

Almost surely, 2^{2100211201021} is an apocalyptic number.

It is an amenable number.

2100211201021 is a deficient number, since it is larger than the sum of its proper divisors (31843835267).

2100211201021 is an equidigital number, since it uses as much as digits as its factorization.

2100211201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31436123.

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

Adding to 2100211201021 its reverse (1201021120012), we get a palindrome (3301232321033).

The spelling of 2100211201021 in words is "two trillion, one hundred billion, two hundred eleven million, two hundred one thousand, twenty-one".