202212110001221 has 8 divisors (see below), whose sum is σ = 204548682864600. Its totient is φ = 199876971064320.

The previous prime is 202212110001203. The next prime is 202212110001257. The reversal of 202212110001221 is 122100011212202.

It can be written as a sum of positive squares in 4 ways, for example, as 82788434404225 + 119423675596996 = 9098815^2 + 10928114^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202212110001221 is a prime.

It is a super-2 number, since 2×202212110001221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202212110001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212610001221) 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, 358197950 + ... + 358762031.

It is an arithmetic number, because the mean of its divisors is an integer number (25568585358075).

Almost surely, 2^{202212110001221} is an apocalyptic number.

It is an amenable number.

202212110001221 is a deficient number, since it is larger than the sum of its proper divisors (2336572863379).

202212110001221 is an equidigital number, since it uses as much as digits as its factorization.

202212110001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716963239.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202212110001221 its reverse (122100011212202), we get a palindrome (324312121213423).

The spelling of 202212110001221 in words is "two hundred two trillion, two hundred twelve billion, one hundred ten million, one thousand, two hundred twenty-one".