120220100001 has 12 divisors (see below), whose sum is σ = 177886652580. Its totient is φ = 78191934720.

The previous prime is 120220099999. The next prime is 120220100023. The reversal of 120220100001 is 100001022021.

It can be written as a sum of positive squares in 2 ways, for example, as 15841998225 + 104378101776 = 125865^2 + 323076^2 .

It is not a de Polignac number, because 120220100001 - 2¹ = 120220099999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (120220100071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162899496 + ... + 162900233.

It is an arithmetic number, because the mean of its divisors is an integer number (14823887715).

Almost surely, 2^120220100001 is an apocalyptic number.

It is an amenable number.

120220100001 is a deficient number, since it is larger than the sum of its proper divisors (57666552579).

120220100001 is a wasteful number, since it uses less digits than its factorization.

120220100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325799776 (or 325799773 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120220100001 its reverse (100001022021), we get a palindrome (220221122022).

The spelling of 120220100001 in words is "one hundred twenty billion, two hundred twenty million, one hundred thousand, one".