212021111311 has 8 divisors (see below), whose sum is σ = 212544435600. Its totient is φ = 211497881280.

The previous prime is 212021111279. The next prime is 212021111329. The reversal of 212021111311 is 113111120212.

It is a happy number.

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 212021111311 - 2⁵ = 212021111279 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 (212021121311) 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, 7095360 + ... + 7125178.

It is an arithmetic number, because the mean of its divisors is an integer number (26568054450).

Almost surely, 2^212021111311 is an apocalyptic number.

212021111311 is a deficient number, since it is larger than the sum of its proper divisors (523324289).

212021111311 is a wasteful number, since it uses less digits than its factorization.

212021111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47129.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 212021111311 its reverse (113111120212), we get a palindrome (325132231523).

The spelling of 212021111311 in words is "two hundred twelve billion, twenty-one million, one hundred eleven thousand, three hundred eleven".