202201221021001 has 4 divisors (see below), whose sum is σ = 205628360360400. Its totient is φ = 198774081681604.

The previous prime is 202201221020987. The next prime is 202201221021013. The reversal of 202201221021001 is 100120122102202.

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 202201221021001 - 2¹³ = 202201221012809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202201221021101) 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, 1713569669611 + ... + 1713569669728.

It is an arithmetic number, because the mean of its divisors is an integer number (51407090090100).

Almost surely, 2^{202201221021001} is an apocalyptic number.

It is an amenable number.

202201221021001 is a deficient number, since it is larger than the sum of its proper divisors (3427139339399).

202201221021001 is an equidigital number, since it uses as much as digits as its factorization.

202201221021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427139339398.

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

Adding to 202201221021001 its reverse (100120122102202), we get a palindrome (302321343123203).

The spelling of 202201221021001 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-one million, twenty-one thousand, one".