2010111211221 has 32 divisors (see below), whose sum is σ = 2832610480128. Its totient is φ = 1266372544320.

The previous prime is 2010111211219. The next prime is 2010111211261. The reversal of 2010111211221 is 1221121110102.

It is a happy number.

It is not a de Polignac number, because 2010111211221 - 2¹ = 2010111211219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2010111211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010111211261) 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, 787185 + ... + 2154038.

It is an arithmetic number, because the mean of its divisors is an integer number (88519077504).

Almost surely, 2^{2010111211221} is an apocalyptic number.

It is an amenable number.

2010111211221 is a deficient number, since it is larger than the sum of its proper divisors (822499268907).

2010111211221 is a wasteful number, since it uses less digits than its factorization.

2010111211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941441.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2010111211221 its reverse (1221121110102), we get a palindrome (3231232321323).

The spelling of 2010111211221 in words is "two trillion, ten billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-one".