2130111020 has 24 divisors (see below), whose sum is σ = 4512824064. Its totient is φ = 844503296.

The previous prime is 2130111001. The next prime is 2130111037. The reversal of 2130111020 is 201110312.

It is a junction number, because it is equal to n+sod(n) for n = 2130110992 and 2130111010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469004 + ... + 473523.

It is an arithmetic number, because the mean of its divisors is an integer number (188034336).

Almost surely, 2^2130111020 is an apocalyptic number.

2130111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130111020 is an abundant number, since it is smaller than the sum of its proper divisors (2382713044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2130111020 is a wasteful number, since it uses less digits than its factorization.

2130111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942649 (or 942647 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2130111020 is about 46153.1257879680. The cubic root of 2130111020 is about 1286.6707050920.

Adding to 2130111020 its reverse (201110312), we get a palindrome (2331221332).

The spelling of 2130111020 in words is "two billion, one hundred thirty million, one hundred eleven thousand, twenty".