1012011002001 has 8 divisors (see below), whose sum is σ = 1499275558560. Its totient is φ = 674674001316.

The previous prime is 1012011001951. The next prime is 1012011002017. The reversal of 1012011002001 is 1002001102101.

It is a happy number.

It is not a de Polignac number, because 1012011002001 - 2¹⁴ = 1012010985617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1012011002021) 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, 18740944455 + ... + 18740944508.

It is an arithmetic number, because the mean of its divisors is an integer number (187409444820).

Almost surely, 2^{1012011002001} is an apocalyptic number.

It is an amenable number.

1012011002001 is a deficient number, since it is larger than the sum of its proper divisors (487264556559).

1012011002001 is an equidigital number, since it uses as much as digits as its factorization.

1012011002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37481888972 (or 37481888966 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1012011002001 its reverse (1002001102101), we get a palindrome (2014012104102).

The spelling of 1012011002001 in words is "one trillion, twelve billion, eleven million, two thousand, one".