2145107100 has 36 divisors (see below), whose sum is σ = 6206510744. Its totient is φ = 572028480.

The previous prime is 2145107077. The next prime is 2145107101. The reversal of 2145107100 is 17015412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145107101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3574879 + ... + 3575478.

Almost surely, 2^2145107100 is an apocalyptic number.

2145107100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145107100 is an abundant number, since it is smaller than the sum of its proper divisors (4061403644).

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

2145107100 is a wasteful number, since it uses less digits than its factorization.

2145107100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150374 (or 7150367 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 2145107100 is about 46315.3009274473. The cubic root of 2145107100 is about 1289.6830541579.

The spelling of 2145107100 in words is "two billion, one hundred forty-five million, one hundred seven thousand, one hundred".