202221111949 has 2 divisors, whose sum is σ = 202221111950. Its totient is φ = 202221111948.

The previous prime is 202221111947. The next prime is 202221112031. The reversal of 202221111949 is 949111122202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202203108900 + 18003049 = 449670^2 + 4243^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221111949 - 2¹ = 202221111947 is a prime.

Together with 202221111947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202221111943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110555974 + 101110555975.

It is an arithmetic number, because the mean of its divisors is an integer number (101110555975).

Almost surely, 2^202221111949 is an apocalyptic number.

It is an amenable number.

202221111949 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221111949 is an equidigital number, since it uses as much as digits as its factorization.

202221111949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 202221111949 in words is "two hundred two billion, two hundred twenty-one million, one hundred eleven thousand, nine hundred forty-nine".