2210102101021 has 2 divisors, whose sum is σ = 2210102101022. Its totient is φ = 2210102101020.

The previous prime is 2210102101019. The next prime is 2210102101127. The reversal of 2210102101021 is 1201012010122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1563025044100 + 647077056921 = 1250210^2 + 804411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210102101021 - 2¹ = 2210102101019 is a prime.

Together with 2210102101019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2210102100992 and 2210102101010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210102101001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105051050510 + 1105051050511.

It is an arithmetic number, because the mean of its divisors is an integer number (1105051050511).

Almost surely, 2^{2210102101021} is an apocalyptic number.

It is an amenable number.

2210102101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210102101021 is an equidigital number, since it uses as much as digits as its factorization.

2210102101021 is an evil number, because the sum of its binary digits is even.

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

Adding to 2210102101021 its reverse (1201012010122), we get a palindrome (3411114111143).

The spelling of 2210102101021 in words is "two trillion, two hundred ten billion, one hundred two million, one hundred one thousand, twenty-one".