1201221104 has 20 divisors (see below), whose sum is σ = 2331257040. Its totient is φ = 599606400.

The previous prime is 1201221053. The next prime is 1201221107. The reversal of 1201221104 is 4011221021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201221107) 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, 52844 + ... + 72075.

It is an arithmetic number, because the mean of its divisors is an integer number (116562852).

Almost surely, 2^1201221104 is an apocalyptic number.

It is an amenable number.

1201221104 is a deficient number, since it is larger than the sum of its proper divisors (1130035936).

1201221104 is a wasteful number, since it uses less digits than its factorization.

1201221104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125528 (or 125522 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1201221104 is about 34658.6367879638. The cubic root of 1201221104 is about 1063.0188960527.

Adding to 1201221104 its reverse (4011221021), we get a palindrome (5212442125).

The spelling of 1201221104 in words is "one billion, two hundred one million, two hundred twenty-one thousand, one hundred four".