2130021111 has 8 divisors (see below), whose sum is σ = 2841091200. Its totient is φ = 1419482552.

The previous prime is 2130021107. The next prime is 2130021133. The reversal of 2130021111 is 1111200312.

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 2130021111 - 2² = 2130021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130021161) 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, 123435 + ... + 139628.

It is an arithmetic number, because the mean of its divisors is an integer number (355136400).

Almost surely, 2^2130021111 is an apocalyptic number.

2130021111 is a deficient number, since it is larger than the sum of its proper divisors (711070089).

2130021111 is a wasteful number, since it uses less digits than its factorization.

2130021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265765.

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

The square root of 2130021111 is about 46152.1517483205. The cubic root of 2130021111 is about 1286.6526019817.

Adding to 2130021111 its reverse (1111200312), we get a palindrome (3241221423).

The spelling of 2130021111 in words is "two billion, one hundred thirty million, twenty-one thousand, one hundred eleven".