210122112111011 has 4 divisors (see below), whose sum is σ = 210122153739624. Its totient is φ = 210122070482400.

The previous prime is 210122112111007. The next prime is 210122112111089. The reversal of 210122112111011 is 110111211221012.

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

It is a cyclic number.

It is not a de Polignac number, because 210122112111011 - 2² = 210122112111007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122112161011) 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, 11998310 + ... + 23752971.

It is an arithmetic number, because the mean of its divisors is an integer number (52530538434906).

Almost surely, 2^{210122112111011} is an apocalyptic number.

210122112111011 is a deficient number, since it is larger than the sum of its proper divisors (41628613).

210122112111011 is an equidigital number, since it uses as much as digits as its factorization.

210122112111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41628612.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 210122112111011 its reverse (110111211221012), we get a palindrome (320233323332023).

The spelling of 210122112111011 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred twelve million, one hundred eleven thousand, eleven".