2012145100 has 72 divisors (see below), whose sum is σ = 5125053920. Its totient is φ = 671224320.

The previous prime is 2012145073. The next prime is 2012145103. The reversal of 2012145100 is 15412102.

It is not an unprimeable number, because it can be changed into a prime (2012145103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12945 + ... + 64744.

Almost surely, 2^2012145100 is an apocalyptic number.

2012145100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012145100 is an abundant number, since it is smaller than the sum of its proper divisors (3112908820).

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

2012145100 is a wasteful number, since it uses less digits than its factorization.

2012145100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77747 (or 77740 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2012145100 is about 44856.9403771590. The cubic root of 2012145100 is about 1262.4662161335.

Adding to 2012145100 its reverse (15412102), we get a palindrome (2027557202).

The spelling of 2012145100 in words is "two billion, twelve million, one hundred forty-five thousand, one hundred".