122111010101 has 4 divisors (see below), whose sum is σ = 122138192652. Its totient is φ = 122083827552.

The previous prime is 122111010067. The next prime is 122111010139. The reversal of 122111010101 is 101010111221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117889909201 + 4221100900 = 343351^2 + 64970^2 .

It is a cyclic number.

It is not a de Polignac number, because 122111010101 - 2⁶ = 122111010037 is a prime.

It is a super-2 number, since 2×122111010101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111010701) 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, 13584536 + ... + 13593521.

It is an arithmetic number, because the mean of its divisors is an integer number (30534548163).

Almost surely, 2^122111010101 is an apocalyptic number.

It is an amenable number.

122111010101 is a deficient number, since it is larger than the sum of its proper divisors (27182551).

122111010101 is an equidigital number, since it uses as much as digits as its factorization.

122111010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27182550.

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

Adding to 122111010101 its reverse (101010111221), we get a palindrome (223121121322).

The spelling of 122111010101 in words is "one hundred twenty-two billion, one hundred eleven million, ten thousand, one hundred one".