2001221002110 has 64 divisors (see below), whose sum is σ = 5239781395200. Its totient is φ = 485124026880.

The previous prime is 2001221002103. The next prime is 2001221002117. The reversal of 2001221002110 is 112001221002.

It is an interprime number because it is at equal distance from previous prime (2001221002103) and next prime (2001221002117).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001221002117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8613529 + ... + 8842811.

It is an arithmetic number, because the mean of its divisors is an integer number (81871584300).

Almost surely, 2^{2001221002110} is an apocalyptic number.

2001221002110 is an abundant number, since it is smaller than the sum of its proper divisors (3238560393090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001221002110 is a wasteful number, since it uses less digits than its factorization.

2001221002110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255753.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001221002110 its reverse (112001221002), we get a palindrome (2113222223112).

The spelling of 2001221002110 in words is "two trillion, one billion, two hundred twenty-one million, two thousand, one hundred ten".