211020002111 has 4 divisors (see below), whose sum is σ = 212887435872. Its totient is φ = 209152568352.

The previous prime is 211020002021. The next prime is 211020002131. The reversal of 211020002111 is 111200020112.

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 211020002111 - 2²⁶ = 210952893247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211020002092 and 211020002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020002131) 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, 933716711 + ... + 933716936.

It is an arithmetic number, because the mean of its divisors is an integer number (53221858968).

Almost surely, 2^211020002111 is an apocalyptic number.

211020002111 is a deficient number, since it is larger than the sum of its proper divisors (1867433761).

211020002111 is a wasteful number, since it uses less digits than its factorization.

211020002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867433760.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211020002111 its reverse (111200020112), we get a palindrome (322220022223).

The spelling of 211020002111 in words is "two hundred eleven billion, twenty million, two thousand, one hundred eleven".