122021110121 has 4 divisors (see below), whose sum is σ = 122123392212. Its totient is φ = 121918828032.

The previous prime is 122021110097. The next prime is 122021110139. The reversal of 122021110121 is 121011120221.

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 28424274025 + 93596836096 = 168595^2 + 305936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122021110121 is a prime.

It is a super-2 number, since 2×122021110121² (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 = 122021110096 and 122021110105.

It is not an unprimeable number, because it can be changed into a prime (122021113121) 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, 51139256 + ... + 51141641.

It is an arithmetic number, because the mean of its divisors is an integer number (30530848053).

Almost surely, 2^122021110121 is an apocalyptic number.

It is an amenable number.

122021110121 is a deficient number, since it is larger than the sum of its proper divisors (102282091).

122021110121 is a wasteful number, since it uses less digits than its factorization.

122021110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102282090.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122021110121 its reverse (121011120221), we get a palindrome (243032230342).

The spelling of 122021110121 in words is "one hundred twenty-two billion, twenty-one million, one hundred ten thousand, one hundred twenty-one".