1000120101201 has 48 divisors (see below), whose sum is σ = 1564886406720. Its totient is φ = 611843518080.

The previous prime is 1000120101199. The next prime is 1000120101209. The reversal of 1000120101201 is 1021010210001.

It is a happy number.

It is not a de Polignac number, because 1000120101201 - 2¹ = 1000120101199 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 (1000120101209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77480190 + ... + 77493096.

It is an arithmetic number, because the mean of its divisors is an integer number (32601800140).

Almost surely, 2^{1000120101201} is an apocalyptic number.

It is an amenable number.

1000120101201 is a deficient number, since it is larger than the sum of its proper divisors (564766305519).

1000120101201 is a wasteful number, since it uses less digits than its factorization.

1000120101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16766 (or 16763 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1000120101201 its reverse (1021010210001), we get a palindrome (2021130311202).

The spelling of 1000120101201 in words is "one trillion, one hundred twenty million, one hundred one thousand, two hundred one".