210212211021 has 8 divisors (see below), whose sum is σ = 282902415264. Its totient is φ = 138831740400.

The previous prime is 210212211019. The next prime is 210212211023. The reversal of 210212211021 is 120112212012.

It is an interprime number because it is at equal distance from previous prime (210212211019) and next prime (210212211023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210212211021 - 2¹ = 210212211019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212211023) 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, 327433030 + ... + 327433671.

It is an arithmetic number, because the mean of its divisors is an integer number (35362801908).

Almost surely, 2^210212211021 is an apocalyptic number.

It is an amenable number.

210212211021 is a deficient number, since it is larger than the sum of its proper divisors (72690204243).

210212211021 is a wasteful number, since it uses less digits than its factorization.

210212211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654866811.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210212211021 its reverse (120112212012), we get a palindrome (330324423033).

Subtracting from 210212211021 its reverse (120112212012), we obtain a palindrome (90099999009).

The spelling of 210212211021 in words is "two hundred ten billion, two hundred twelve million, two hundred eleven thousand, twenty-one".