2001212121110 has 32 divisors (see below), whose sum is σ = 3686504022432. Its totient is φ = 781752142080.

The previous prime is 2001212121089. The next prime is 2001212121119. The reversal of 2001212121110 is 111212121002.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001212121119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2563052 + ... + 3251408.

It is an arithmetic number, because the mean of its divisors is an integer number (115203250701).

Almost surely, 2^{2001212121110} is an apocalyptic number.

2001212121110 is a deficient number, since it is larger than the sum of its proper divisors (1685291901322).

2001212121110 is a wasteful number, since it uses less digits than its factorization.

2001212121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695168.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2001212121110 its reverse (111212121002), we get a palindrome (2112424242112).

The spelling of 2001212121110 in words is "two trillion, one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ten".