122010011111 has 4 divisors (see below), whose sum is σ = 122011169424. Its totient is φ = 122008852800.

The previous prime is 122010011107. The next prime is 122010011113. The reversal of 122010011111 is 111110010221.

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 122010011111 - 2² = 122010011107 is a prime.

It is a super-2 number, since 2×122010011111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122010011092 and 122010011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010011113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403370 + ... + 637751.

It is an arithmetic number, because the mean of its divisors is an integer number (30502792356).

Almost surely, 2^122010011111 is an apocalyptic number.

122010011111 is a deficient number, since it is larger than the sum of its proper divisors (1158313).

122010011111 is a wasteful number, since it uses less digits than its factorization.

122010011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158312.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 122010011111 its reverse (111110010221), we get a palindrome (233120021332).

The spelling of 122010011111 in words is "one hundred twenty-two billion, ten million, eleven thousand, one hundred eleven".