122110021001 has 4 divisors (see below), whose sum is σ = 122423928900. Its totient is φ = 121796113104.

The previous prime is 122110020997. The next prime is 122110021031. The reversal of 122110021001 is 100120011221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100120011221 = 2861 ⋅34994761.

It can be written as a sum of positive squares in 2 ways, for example, as 54873531001 + 67236490000 = 234251^2 + 259300^2 .

It is a cyclic number.

It is not a de Polignac number, because 122110021001 - 2² = 122110020997 is a prime.

It is a super-2 number, since 2×122110021001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122110021031) 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, 156953366 + ... + 156954143.

It is an arithmetic number, because the mean of its divisors is an integer number (30605982225).

Almost surely, 2^122110021001 is an apocalyptic number.

It is an amenable number.

122110021001 is a deficient number, since it is larger than the sum of its proper divisors (313907899).

122110021001 is an equidigital number, since it uses as much as digits as its factorization.

122110021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313907898.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 122110021001 its reverse (100120011221), we get a palindrome (222230032222).

The spelling of 122110021001 in words is "one hundred twenty-two billion, one hundred ten million, twenty-one thousand, one".