101122212121111 has 4 divisors (see below), whose sum is σ = 101567684421432. Its totient is φ = 100676739820792.

The previous prime is 101122212121019. The next prime is 101122212121141. The reversal of 101122212121111 is 111121212221101.

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 101122212121111 - 2¹⁵ = 101122212088343 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 (101122212121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222736149820 + ... + 222736150273.

It is an arithmetic number, because the mean of its divisors is an integer number (25391921105358).

Almost surely, 2^{101122212121111} is an apocalyptic number.

101122212121111 is a deficient number, since it is larger than the sum of its proper divisors (445472300321).

101122212121111 is an equidigital number, since it uses as much as digits as its factorization.

101122212121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445472300320.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 101122212121111 its reverse (111121212221101), we get a palindrome (212243424342212).

The spelling of 101122212121111 in words is "one hundred one trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred eleven".