2001101220992 has 32 divisors (see below), whose sum is σ = 3991209999600. Its totient is φ = 999385770240.

The previous prime is 2001101220949. The next prime is 2001101220997. The reversal of 2001101220992 is 2990221011002.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (2001101220997) 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, 8989934 + ... + 9209837.

Almost surely, 2^{2001101220992} is an apocalyptic number.

It is an amenable number.

2001101220992 is a deficient number, since it is larger than the sum of its proper divisors (1990108778608).

2001101220992 is an equidigital number, since it uses as much as digits as its factorization.

2001101220992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18200644 (or 18200632 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

Adding to 2001101220992 its reverse (2990221011002), we get a palindrome (4991322231994).

The spelling of 2001101220992 in words is "two trillion, one billion, one hundred one million, two hundred twenty thousand, nine hundred ninety-two".