1201121220222 has 96 divisors (see below), whose sum is σ = 3244989496320. Its totient is φ = 311940855360.

The previous prime is 1201121220199. The next prime is 1201121220223. The reversal of 1201121220222 is 2220221211021.

It is a happy number.

1201121220222 is a `hidden beast` number, since 1 + 201 + 1 + 21 + 220 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1201121220195 and 1201121220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201121220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12123904 + ... + 12222572.

It is an arithmetic number, because the mean of its divisors is an integer number (33801973920).

Almost surely, 2^{1201121220222} is an apocalyptic number.

1201121220222 is an abundant number, since it is smaller than the sum of its proper divisors (2043868276098).

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

1201121220222 is a wasteful number, since it uses less digits than its factorization.

1201121220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107478 (or 107475 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1201121220222 its reverse (2220221211021), we get a palindrome (3421342431243).

The spelling of 1201121220222 in words is "one trillion, two hundred one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".