120202100001 has 12 divisors (see below), whose sum is σ = 173936977812. Its totient is φ = 79990861536.

The previous prime is 120202099991. The next prime is 120202100021. The reversal of 120202100001 is 100001202021.

It can be written as a sum of positive squares in 2 ways, for example, as 2817061776 + 117385038225 = 53076^2 + 342615^2 .

It is not a de Polignac number, because 120202100001 - 2¹⁰ = 120202098977 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 (120202100021) 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, 11984026 + ... + 11994051.

It is an arithmetic number, because the mean of its divisors is an integer number (14494748151).

Almost surely, 2^120202100001 is an apocalyptic number.

It is an amenable number.

120202100001 is a deficient number, since it is larger than the sum of its proper divisors (53734877811).

120202100001 is a wasteful number, since it uses less digits than its factorization.

120202100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23978640 (or 23978637 counting only the distinct ones).

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

Adding to 120202100001 its reverse (100001202021), we get a palindrome (220203302022).

The spelling of 120202100001 in words is "one hundred twenty billion, two hundred two million, one hundred thousand, one".