210122102212111 has 4 divisors (see below), whose sum is σ = 212653693805112. Its totient is φ = 207590510619112.

The previous prime is 210122102212091. The next prime is 210122102212153. The reversal of 210122102212111 is 111212201221012.

It is a happy number.

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 210122102212111 - 2⁹ = 210122102211599 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 (210122106212111) 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, 1265795796376 + ... + 1265795796541.

It is an arithmetic number, because the mean of its divisors is an integer number (53163423451278).

Almost surely, 2^{210122102212111} is an apocalyptic number.

210122102212111 is a deficient number, since it is larger than the sum of its proper divisors (2531591593001).

210122102212111 is an equidigital number, since it uses as much as digits as its factorization.

210122102212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531591593000.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210122102212111 its reverse (111212201221012), we get a palindrome (321334303433123).

The spelling of 210122102212111 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred two million, two hundred twelve thousand, one hundred eleven".