2001545212 has 24 divisors (see below), whose sum is σ = 3571156512. Its totient is φ = 981240000.

The previous prime is 2001545173. The next prime is 2001545219. The reversal of 2001545212 is 2125451002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001545219) 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, 538962 + ... + 542662.

It is an arithmetic number, because the mean of its divisors is an integer number (148798188).

Almost surely, 2^2001545212 is an apocalyptic number.

It is an amenable number.

2001545212 is a deficient number, since it is larger than the sum of its proper divisors (1569611300).

2001545212 is a wasteful number, since it uses less digits than its factorization.

2001545212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309 (or 6307 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2001545212 is about 44738.6322097580. The cubic root of 2001545212 is about 1260.2454405547.

Adding to 2001545212 its reverse (2125451002), we get a palindrome (4126996214).

The spelling of 2001545212 in words is "two billion, one million, five hundred forty-five thousand, two hundred twelve".