120221220100 has 36 divisors (see below), whose sum is σ = 266430697344. Its totient is φ = 47065326880.

The previous prime is 120221220079. The next prime is 120221220113. The reversal of 120221220100 is 1022122021.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12784792 + ... + 12794191.

It is an arithmetic number, because the mean of its divisors is an integer number (7400852704).

Almost surely, 2^120221220100 is an apocalyptic number.

120221220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120221220100 is an abundant number, since it is smaller than the sum of its proper divisors (146209477244).

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

120221220100 is a wasteful number, since it uses less digits than its factorization.

120221220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25579044 (or 25579037 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 120221220100 its reverse (1022122021), we get a palindrome (121243342121).

The spelling of 120221220100 in words is "one hundred twenty billion, two hundred twenty-one million, two hundred twenty thousand, one hundred".