2001110021012 has 12 divisors (see below), whose sum is σ = 3622699176180. Its totient is φ = 966053113536.

The previous prime is 2001110020981. The next prime is 2001110021017. The reversal of 2001110021012 is 2101200111002.

It can be written as a sum of positive squares in 2 ways, for example, as 1689339664516 + 311770356496 = 1299746^2 + 558364^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001110020984 and 2001110021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001110021017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8625474113 + ... + 8625474344.

It is an arithmetic number, because the mean of its divisors is an integer number (301891598015).

Almost surely, 2^{2001110021012} is an apocalyptic number.

It is an amenable number.

2001110021012 is a deficient number, since it is larger than the sum of its proper divisors (1621589155168).

2001110021012 is a wasteful number, since it uses less digits than its factorization.

2001110021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17250948490 (or 17250948488 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2001110021012 its reverse (2101200111002), we get a palindrome (4102310132014).

The spelling of 2001110021012 in words is "two trillion, one billion, one hundred ten million, twenty-one thousand, twelve".