210021210021211 has 8 divisors (see below), whose sum is σ = 210235718408400. Its totient is φ = 209806750551552.

The previous prime is 210021210021191. The next prime is 210021210021229. The reversal of 210021210021211 is 112120012120012.

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 210021210021211 - 2¹³ = 210021210013019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021210061211) 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, 3635170 + ... + 20814823.

It is an arithmetic number, because the mean of its divisors is an integer number (26279464801050).

Almost surely, 2^{210021210021211} is an apocalyptic number.

210021210021211 is a deficient number, since it is larger than the sum of its proper divisors (214508387189).

210021210021211 is a wasteful number, since it uses less digits than its factorization.

210021210021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24458765.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210021210021211 its reverse (112120012120012), we get a palindrome (322141222141223).

The spelling of 210021210021211 in words is "two hundred ten trillion, twenty-one billion, two hundred ten million, twenty-one thousand, two hundred eleven".