2145124230100 has 18 divisors (see below), whose sum is σ = 4654919579534. Its totient is φ = 858049692000.

The previous prime is 2145124230061. The next prime is 2145124230127. The reversal of 2145124230100 is 10324215412.

It can be written as a sum of positive squares in 3 ways, for example, as 409512964624 + 1735611265476 = 639932^2 + 1317426^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10725621051 + ... + 10725621250.

Almost surely, 2^{2145124230100} is an apocalyptic number.

2145124230100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145124230100 is an abundant number, since it is smaller than the sum of its proper divisors (2509795349434).

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

2145124230100 is a wasteful number, since it uses less digits than its factorization.

2145124230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21451242315 (or 21451242308 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 2145124230100 its reverse (10324215412), we get a palindrome (2155448445512).

The spelling of 2145124230100 in words is "two trillion, one hundred forty-five billion, one hundred twenty-four million, two hundred thirty thousand, one hundred".