2001401215 has 32 divisors (see below), whose sum is σ = 2747649600. Its totient is φ = 1386040320.

The previous prime is 2001401201. The next prime is 2001401219. The reversal of 2001401215 is 5121041002.

It is not a de Polignac number, because 2001401215 - 2²³ = 1993012607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001401219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107841 + ... + 125029.

It is an arithmetic number, because the mean of its divisors is an integer number (85864050).

Almost surely, 2^2001401215 is an apocalyptic number.

2001401215 is a deficient number, since it is larger than the sum of its proper divisors (746248385).

2001401215 is a wasteful number, since it uses less digits than its factorization.

2001401215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17307.

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

The square root of 2001401215 is about 44737.0228669723. The cubic root of 2001401215 is about 1260.2152179191.

Adding to 2001401215 its reverse (5121041002), we get a palindrome (7122442217).

The spelling of 2001401215 in words is "two billion, one million, four hundred one thousand, two hundred fifteen".