2001112021012 has 96 divisors (see below), whose sum is σ = 3888087662592. Its totient is φ = 895193150976.

The previous prime is 2001112021003. The next prime is 2001112021021. The reversal of 2001112021012 is 2101202111002.

It is an interprime number because it is at equal distance from previous prime (2001112021003) and next prime (2001112021021).

It is a super-2 number, since 2×2001112021012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 2001112020983 and 2001112021001.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 1154708898 + ... + 1154710630.

It is an arithmetic number, because the mean of its divisors is an integer number (40500913152).

Almost surely, 2^{2001112021012} is an apocalyptic number.

It is an amenable number.

2001112021012 is a deficient number, since it is larger than the sum of its proper divisors (1886975641580).

2001112021012 is a wasteful number, since it uses less digits than its factorization.

2001112021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737 (or 3735 counting only the distinct ones).

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

Adding to 2001112021012 its reverse (2101202111002), we get a palindrome (4102314132014).

The spelling of 2001112021012 in words is "two trillion, one billion, one hundred twelve million, twenty-one thousand, twelve".