122112101011 has 4 divisors (see below), whose sum is σ = 123784869592. Its totient is φ = 120439332432.

The previous prime is 122112100973. The next prime is 122112101047. The reversal of 122112101011 is 110101211221.

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 122112101011 - 2⁹ = 122112100499 is a prime.

It is a super-2 number, since 2×122112101011² (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 = 122112100982 and 122112101000.

It is not an unprimeable number, because it can be changed into a prime (122112101081) 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, 836384181 + ... + 836384326.

It is an arithmetic number, because the mean of its divisors is an integer number (30946217398).

Almost surely, 2^122112101011 is an apocalyptic number.

122112101011 is a deficient number, since it is larger than the sum of its proper divisors (1672768581).

122112101011 is an equidigital number, since it uses as much as digits as its factorization.

122112101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672768580.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122112101011 its reverse (110101211221), we get a palindrome (232213312232).

The spelling of 122112101011 in words is "one hundred twenty-two billion, one hundred twelve million, one hundred one thousand, eleven".