2211002002021 has 4 divisors (see below), whose sum is σ = 2307132523872. Its totient is φ = 2114871480172.

The previous prime is 2211002002019. The next prime is 2211002002043. The reversal of 2211002002021 is 1202002001122.

It is a happy number.

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 2211002002021 - 2¹ = 2211002002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211002001992 and 2211002002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211002002061) 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, 48065260891 + ... + 48065260936.

It is an arithmetic number, because the mean of its divisors is an integer number (576783130968).

Almost surely, 2^{2211002002021} is an apocalyptic number.

It is an amenable number.

2211002002021 is a deficient number, since it is larger than the sum of its proper divisors (96130521851).

2211002002021 is an equidigital number, since it uses as much as digits as its factorization.

2211002002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96130521850.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2211002002021 its reverse (1202002001122), we get a palindrome (3413004003143).

The spelling of 2211002002021 in words is "two trillion, two hundred eleven billion, two million, two thousand, twenty-one".