211202202002021 has 8 divisors (see below), whose sum is σ = 214854670128600. Its totient is φ = 207555867325440.

The previous prime is 211202202001979. The next prime is 211202202002059. The reversal of 211202202002021 is 120200202202112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7367017350625 + 203835184651396 = 2714225^2 + 14277086^2 .

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 211202202002021 - 2¹⁴ = 211202201985637 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 (211202202002221) 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, 1533293036 + ... + 1533430773.

It is an arithmetic number, because the mean of its divisors is an integer number (26856833766075).

Almost surely, 2^{211202202002021} is an apocalyptic number.

It is an amenable number.

211202202002021 is a deficient number, since it is larger than the sum of its proper divisors (3652468126579).

211202202002021 is a wasteful number, since it uses less digits than its factorization.

211202202002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066724999.

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

Adding to 211202202002021 its reverse (120200202202112), we get a palindrome (331402404204133).

The spelling of 211202202002021 in words is "two hundred eleven trillion, two hundred two billion, two hundred two million, two thousand, twenty-one".