1012011201999 has 24 divisors (see below), whose sum is σ = 1670688014112. Its totient is φ = 578269149120.

The previous prime is 1012011201997. The next prime is 1012011202073. The reversal of 1012011201999 is 9991021102101.

It is not a de Polignac number, because 1012011201999 - 2¹ = 1012011201997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012011201997) 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, 1348597 + ... + 1960289.

It is an arithmetic number, because the mean of its divisors is an integer number (69612000588).

Almost surely, 2^{1012011201999} is an apocalyptic number.

1012011201999 is a deficient number, since it is larger than the sum of its proper divisors (658676812113).

1012011201999 is a wasteful number, since it uses less digits than its factorization.

1012011201999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637967 (or 637964 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 1012011201999 in words is "one trillion, twelve billion, eleven million, two hundred one thousand, nine hundred ninety-nine".