2201010211021 has 2 divisors, whose sum is σ = 2201010211022. Its totient is φ = 2201010211020.

The previous prime is 2201010211019. The next prime is 2201010211069. The reversal of 2201010211021 is 1201120101022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2068954284996 + 132055926025 = 1438386^2 + 363395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201010211021 - 2¹ = 2201010211019 is a prime.

Together with 2201010211019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2201010210992 and 2201010211010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201010212021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100505105510 + 1100505105511.

It is an arithmetic number, because the mean of its divisors is an integer number (1100505105511).

Almost surely, 2^{2201010211021} is an apocalyptic number.

It is an amenable number.

2201010211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201010211021 is an equidigital number, since it uses as much as digits as its factorization.

2201010211021 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 2201010211021 its reverse (1201120101022), we get a palindrome (3402130312043).

The spelling of 2201010211021 in words is "two trillion, two hundred one billion, ten million, two hundred eleven thousand, twenty-one".