210020111311 has 8 divisors (see below), whose sum is σ = 221160582000. Its totient is φ = 198888318720.

The previous prime is 210020111297. The next prime is 210020111333. The reversal of 210020111311 is 113111020012.

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 210020111311 - 2⁷ = 210020111183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210020111291 and 210020111300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020118311) 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, 2119810 + ... + 2216671.

It is an arithmetic number, because the mean of its divisors is an integer number (27645072750).

Almost surely, 2^210020111311 is an apocalyptic number.

210020111311 is a deficient number, since it is larger than the sum of its proper divisors (11140470689).

210020111311 is a wasteful number, since it uses less digits than its factorization.

210020111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339049.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 210020111311 its reverse (113111020012), we get a palindrome (323131131323).

The spelling of 210020111311 in words is "two hundred ten billion, twenty million, one hundred eleven thousand, three hundred eleven".