202211221002221 has 8 divisors (see below), whose sum is σ = 214107703563384. Its totient is φ = 190314927869440.

The previous prime is 202211221002209. The next prime is 202211221002223. The reversal of 202211221002221 is 122200122112202.

It can be written as a sum of positive squares in 4 ways, for example, as 160151910352996 + 42059310649225 = 12655114^2 + 6485315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202211221002221 - 2²² = 202211216807917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202211221002193 and 202211221002202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202211221002223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45156410 + ... + 49432011.

It is an arithmetic number, because the mean of its divisors is an integer number (26763462945423).

Almost surely, 2^{202211221002221} is an apocalyptic number.

It is an amenable number.

202211221002221 is a deficient number, since it is larger than the sum of its proper divisors (11896482561163).

202211221002221 is a wasteful number, since it uses less digits than its factorization.

202211221002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94714191.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202211221002221 its reverse (122200122112202), we get a palindrome (324411343114423).

The spelling of 202211221002221 in words is "two hundred two trillion, two hundred eleven billion, two hundred twenty-one million, two thousand, two hundred twenty-one".