1001401203512 has 8 divisors (see below), whose sum is σ = 1877627256600. Its totient is φ = 500700601752.

The previous prime is 1001401203511. The next prime is 1001401203521. The reversal of 1001401203512 is 2153021041001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1001401203512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001401203511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62587575212 + ... + 62587575227.

It is an arithmetic number, because the mean of its divisors is an integer number (234703407075).

Almost surely, 2^{1001401203512} is an apocalyptic number.

It is an amenable number.

1001401203512 is a deficient number, since it is larger than the sum of its proper divisors (876226053088).

1001401203512 is a wasteful number, since it uses less digits than its factorization.

1001401203512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125175150445 (or 125175150441 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1001401203512 its reverse (2153021041001), we get a palindrome (3154422244513).

The spelling of 1001401203512 in words is "one trillion, one billion, four hundred one million, two hundred three thousand, five hundred twelve".