2210110021021 has 4 divisors (see below), whose sum is σ = 2525840024032. Its totient is φ = 1894380018012.

The previous prime is 2210110021013. The next prime is 2210110021033. The reversal of 2210110021021 is 1201200110122.

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 a cyclic number.

It is not a de Polignac number, because 2210110021021 - 2³ = 2210110021013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2210110020992 and 2210110021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210110021061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157865001495 + ... + 157865001508.

It is an arithmetic number, because the mean of its divisors is an integer number (631460006008).

Almost surely, 2^{2210110021021} is an apocalyptic number.

It is an amenable number.

2210110021021 is a deficient number, since it is larger than the sum of its proper divisors (315730003011).

2210110021021 is an equidigital number, since it uses as much as digits as its factorization.

2210110021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315730003010.

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

Adding to 2210110021021 its reverse (1201200110122), we get a palindrome (3411310131143).

The spelling of 2210110021021 in words is "two trillion, two hundred ten billion, one hundred ten million, twenty-one thousand, twenty-one".