2111020213 has 4 divisors (see below), whose sum is σ = 2222126560. Its totient is φ = 1999913868.

The previous prime is 2111020207. The next prime is 2111020231. The reversal of 2111020213 is 3120201112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2111020213 - 2²⁹ = 1574149301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111020193 and 2111020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111060213) 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, 55553145 + ... + 55553182.

It is an arithmetic number, because the mean of its divisors is an integer number (555531640).

Almost surely, 2^2111020213 is an apocalyptic number.

It is an amenable number.

2111020213 is a deficient number, since it is larger than the sum of its proper divisors (111106347).

2111020213 is a wasteful number, since it uses less digits than its factorization.

2111020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111106346.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2111020213 is about 45945.8399966743. The cubic root of 2111020213 is about 1282.8152985043.

Adding to 2111020213 its reverse (3120201112), we get a palindrome (5231221325).

The spelling of 2111020213 in words is "two billion, one hundred eleven million, twenty thousand, two hundred thirteen".