212020110311 has 4 divisors (see below), whose sum is σ = 212137185624. Its totient is φ = 211903035000.

The previous prime is 212020110271. The next prime is 212020110317. The reversal of 212020110311 is 113011020212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212020110311 - 2¹⁸ = 212019848167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020110317) 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, 58534940 + ... + 58538561.

It is an arithmetic number, because the mean of its divisors is an integer number (53034296406).

Almost surely, 2^212020110311 is an apocalyptic number.

212020110311 is a deficient number, since it is larger than the sum of its proper divisors (117075313).

212020110311 is a wasteful number, since it uses less digits than its factorization.

212020110311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117075312.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212020110311 its reverse (113011020212), we get a palindrome (325031130523).

Subtracting from 212020110311 its reverse (113011020212), we obtain a palindrome (99009090099).

The spelling of 212020110311 in words is "two hundred twelve billion, twenty million, one hundred ten thousand, three hundred eleven".