2011210122101 has 4 divisors (see below), whose sum is σ = 2011216446252. Its totient is φ = 2011203797952.

The previous prime is 2011210122083. The next prime is 2011210122193. The reversal of 2011210122101 is 1012210121102.

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 1146730431025 + 864479691076 = 1070855^2 + 929774^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011210122101 - 2¹⁸ = 2011209859957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011210121101) 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, 2658290 + ... + 3330003.

It is an arithmetic number, because the mean of its divisors is an integer number (502804111563).

Almost surely, 2^{2011210122101} is an apocalyptic number.

It is an amenable number.

2011210122101 is a deficient number, since it is larger than the sum of its proper divisors (6324151).

2011210122101 is an equidigital number, since it uses as much as digits as its factorization.

2011210122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324150.

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

Adding to 2011210122101 its reverse (1012210121102), we get a palindrome (3023420243203).

Subtracting from 2011210122101 its reverse (1012210121102), we obtain a palindrome (999000000999).

The spelling of 2011210122101 in words is "two trillion, eleven billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".