2001121100210 has 16 divisors (see below), whose sum is σ = 3604316679936. Its totient is φ = 799937617968.

The previous prime is 2001121100189. The next prime is 2001121100219. The reversal of 2001121100210 is 120011211002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2001121100191 and 2001121100200.

It is not an unprimeable number, because it can be changed into a prime (2001121100219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63836312 + ... + 63867651.

It is an arithmetic number, because the mean of its divisors is an integer number (225269792496).

Almost surely, 2^{2001121100210} is an apocalyptic number.

2001121100210 is a deficient number, since it is larger than the sum of its proper divisors (1603195579726).

2001121100210 is a wasteful number, since it uses less digits than its factorization.

2001121100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127705537.

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

Adding to 2001121100210 its reverse (120011211002), we get a palindrome (2121132311212).

The spelling of 2001121100210 in words is "two trillion, one billion, one hundred twenty-one million, one hundred thousand, two hundred ten".