121222201120 has 48 divisors (see below), whose sum is σ = 287067864888. Its totient is φ = 48373678080.

The previous prime is 121222201099. The next prime is 121222201127. The reversal of 121222201120 is 21102222121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15802501264 + 105419699856 = 125708^2 + 324684^2 .

It is a super-3 number, since 3×121222201120³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121222201094 and 121222201103.

It is not an unprimeable number, because it can be changed into a prime (121222201127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832449 + ... + 967168.

Almost surely, 2^121222201120 is an apocalyptic number.

121222201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222201120 is an abundant number, since it is smaller than the sum of its proper divisors (165845663768).

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

121222201120 is a wasteful number, since it uses less digits than its factorization.

121222201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800053 (or 1800045 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222201120 its reverse (21102222121), we get a palindrome (142324423241).

The spelling of 121222201120 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred twenty".