2202100211221 has 4 divisors (see below), whose sum is σ = 2202316899552. Its totient is φ = 2201883522892.

The previous prime is 2202100211191. The next prime is 2202100211239. The reversal of 2202100211221 is 1221120012022.

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 2202100211221 - 2⁷ = 2202100211093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202100211195 and 2202100211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202100211021) 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, 108328921 + ... + 108349246.

It is an arithmetic number, because the mean of its divisors is an integer number (550579224888).

Almost surely, 2^{2202100211221} is an apocalyptic number.

It is an amenable number.

2202100211221 is a deficient number, since it is larger than the sum of its proper divisors (216688331).

2202100211221 is a wasteful number, since it uses less digits than its factorization.

2202100211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216688330.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2202100211221 its reverse (1221120012022), we get a palindrome (3423220223243).

The spelling of 2202100211221 in words is "two trillion, two hundred two billion, one hundred million, two hundred eleven thousand, two hundred twenty-one".