121201122 has 64 divisors (see below), whose sum is σ = 296976384. Its totient is φ = 32218560.

The previous prime is 121201117. The next prime is 121201127. The reversal of 121201122 is 221102121.

It is an interprime number because it is at equal distance from previous prime (121201117) and next prime (121201127).

It is a junction number, because it is equal to n+sod(n) for n = 121201098 and 121201107.

It is not an unprimeable number, because it can be changed into a prime (121201127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34047 + ... + 37437.

It is an arithmetic number, because the mean of its divisors is an integer number (4640256).

Almost surely, 2^121201122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121201122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148488192).

121201122 is an abundant number, since it is smaller than the sum of its proper divisors (175775262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121201122 is a wasteful number, since it uses less digits than its factorization.

121201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121201122 is about 11009.1381134038. The cubic root of 121201122 is about 494.8826331269.

Adding to 121201122 its reverse (221102121), we get a palindrome (342303243).

Subtracting 121201122 from its reverse (221102121), we obtain a palindrome (99900999).

The spelling of 121201122 in words is "one hundred twenty-one million, two hundred one thousand, one hundred twenty-two".