2010111222121 has 4 divisors (see below), whose sum is σ = 2010924047572. Its totient is φ = 2009298396672.

The previous prime is 2010111222089. The next prime is 2010111222143. The reversal of 2010111222121 is 1212221110102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 622276434025 + 1387834788096 = 788845^2 + 1178064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010111222121 - 2⁵ = 2010111222089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010111222095 and 2010111222104.

It is not an unprimeable number, because it can be changed into a prime (2010111222151) 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, 406409016 + ... + 406413961.

It is an arithmetic number, because the mean of its divisors is an integer number (502731011893).

Almost surely, 2^{2010111222121} is an apocalyptic number.

It is an amenable number.

2010111222121 is a deficient number, since it is larger than the sum of its proper divisors (812825451).

2010111222121 is an equidigital number, since it uses as much as digits as its factorization.

2010111222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812825450.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2010111222121 its reverse (1212221110102), we get a palindrome (3222332332223).

The spelling of 2010111222121 in words is "two trillion, ten billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".