2110212311021 has 4 divisors (see below), whose sum is σ = 2131967077212. Its totient is φ = 2088457544832.

The previous prime is 2110212310993. The next prime is 2110212311033. The reversal of 2110212311021 is 1201132120112.

It is a happy number.

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 306257094025 + 1803955216996 = 553405^2 + 1343114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110212311021 - 2¹⁸ = 2110212048877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110212311071) 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, 10877382950 + ... + 10877383143.

It is an arithmetic number, because the mean of its divisors is an integer number (532991769303).

Almost surely, 2^{2110212311021} is an apocalyptic number.

It is an amenable number.

2110212311021 is a deficient number, since it is larger than the sum of its proper divisors (21754766191).

2110212311021 is an equidigital number, since it uses as much as digits as its factorization.

2110212311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21754766190.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2110212311021 its reverse (1201132120112), we get a palindrome (3311344431133).

The spelling of 2110212311021 in words is "two trillion, one hundred ten billion, two hundred twelve million, three hundred eleven thousand, twenty-one".