20210122110111 has 8 divisors (see below), whose sum is σ = 26949533124864. Its totient is φ = 13472062917720.

The previous prime is 20210122110029. The next prime is 20210122110173. The reversal of 20210122110111 is 11101122101202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20210122110111 - 2⁹ = 20210122109599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210122110811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337920705 + ... + 337980506.

It is an arithmetic number, because the mean of its divisors is an integer number (3368691640608).

Almost surely, 2^{20210122110111} is an apocalyptic number.

20210122110111 is a deficient number, since it is larger than the sum of its proper divisors (6739411014753).

20210122110111 is an equidigital number, since it uses as much as digits as its factorization.

20210122110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675911181.

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

Adding to 20210122110111 its reverse (11101122101202), we get a palindrome (31311244211313).

The spelling of 20210122110111 in words is "twenty trillion, two hundred ten billion, one hundred twenty-two million, one hundred ten thousand, one hundred eleven".