202002102212021 has 8 divisors (see below), whose sum is σ = 211121998048920. Its totient is φ = 193025826782208.

The previous prime is 202002102211993. The next prime is 202002102212093. The reversal of 202002102212021 is 120212201200202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2237375757796 + 199764726454225 = 1495786^2 + 14133815^2 .

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 202002102212021 - 2³⁸ = 201727224305077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002102212621) 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, 35905098896 + ... + 35905104521.

It is an arithmetic number, because the mean of its divisors is an integer number (26390249756115).

Almost surely, 2^{202002102212021} is an apocalyptic number.

It is an amenable number.

202002102212021 is a deficient number, since it is larger than the sum of its proper divisors (9119895836899).

202002102212021 is an equidigital number, since it uses as much as digits as its factorization.

202002102212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71810203543.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202002102212021 its reverse (120212201200202), we get a palindrome (322214303412223).

The spelling of 202002102212021 in words is "two hundred two trillion, two billion, one hundred two million, two hundred twelve thousand, twenty-one".