200210210120021 has 4 divisors (see below), whose sum is σ = 200210328465312. Its totient is φ = 200210091774732.

The previous prime is 200210210119939. The next prime is 200210210120023. The reversal of 200210210120021 is 120021012012002.

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 200210210120021 - 2³⁸ = 199935332213077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200210210119978 and 200210210120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200210210120023) 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, 56597675 + ... + 60030968.

It is an arithmetic number, because the mean of its divisors is an integer number (50052582116328).

Almost surely, 2^{200210210120021} is an apocalyptic number.

It is an amenable number.

200210210120021 is a deficient number, since it is larger than the sum of its proper divisors (118345291).

200210210120021 is a wasteful number, since it uses less digits than its factorization.

200210210120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118345290.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200210210120021 its reverse (120021012012002), we get a palindrome (320231222132023).

The spelling of 200210210120021 in words is "two hundred trillion, two hundred ten billion, two hundred ten million, one hundred twenty thousand, twenty-one".