2001021012112 has 40 divisors (see below), whose sum is σ = 3983325275072. Its totient is φ = 973087344000.

The previous prime is 2001021012091. The next prime is 2001021012113. The reversal of 2001021012112 is 2112101201002.

It is a junction number, because it is equal to n+sod(n) for n = 2001021012092 and 2001021012101.

It is not an unprimeable number, because it can be changed into a prime (2001021012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847687 + ... + 2172697.

Almost surely, 2^{2001021012112} is an apocalyptic number.

It is an amenable number.

2001021012112 is a deficient number, since it is larger than the sum of its proper divisors (1982304262960).

2001021012112 is a wasteful number, since it uses less digits than its factorization.

2001021012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327607 (or 1327601 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001021012112 its reverse (2112101201002), we get a palindrome (4113122213114).

The spelling of 2001021012112 in words is "two trillion, one billion, twenty-one million, twelve thousand, one hundred twelve".