210212000100021 has 32 divisors (see below), whose sum is σ = 290095933095936. Its totient is φ = 135258939360000.

The previous prime is 210212000100007. The next prime is 210212000100041. The reversal of 210212000100021 is 120001000212012.

It is not a de Polignac number, because 210212000100021 - 2⁵ = 210212000099989 is a prime.

It is a super-3 number, since 3×210212000100021³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212000100001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215477080 + ... + 216450446.

It is an arithmetic number, because the mean of its divisors is an integer number (9065497909248).

Almost surely, 2^{210212000100021} is an apocalyptic number.

It is an amenable number.

210212000100021 is a deficient number, since it is larger than the sum of its proper divisors (79883932995915).

210212000100021 is a wasteful number, since it uses less digits than its factorization.

210212000100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979593.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210212000100021 its reverse (120001000212012), we get a palindrome (330213000312033).

The spelling of 210212000100021 in words is "two hundred ten trillion, two hundred twelve billion, one hundred thousand, twenty-one".