212021110311 has 8 divisors (see below), whose sum is σ = 282697273584. Its totient is φ = 141346176960.

The previous prime is 212021110303. The next prime is 212021110321. The reversal of 212021110311 is 113011120212.

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

It is not a de Polignac number, because 212021110311 - 2³ = 212021110303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021110321) 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, 227955 + ... + 689931.

It is an arithmetic number, because the mean of its divisors is an integer number (35337159198).

Almost surely, 2^212021110311 is an apocalyptic number.

212021110311 is a deficient number, since it is larger than the sum of its proper divisors (70676163273).

212021110311 is a wasteful number, since it uses less digits than its factorization.

212021110311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614961.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 212021110311 its reverse (113011120212), we get a palindrome (325032230523).

Subtracting from 212021110311 its reverse (113011120212), we obtain a palindrome (99009990099).

The spelling of 212021110311 in words is "two hundred twelve billion, twenty-one million, one hundred ten thousand, three hundred eleven".