1201001220201 has 4 divisors (see below), whose sum is σ = 1601334960272. Its totient is φ = 800667480132.

The previous prime is 1201001220179. The next prime is 1201001220239. The reversal of 1201001220201 is 1020221001021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1201001220201 - 2¹⁵ = 1201001187433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1201001220101) 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, 200166870031 + ... + 200166870036.

It is an arithmetic number, because the mean of its divisors is an integer number (400333740068).

Almost surely, 2^{1201001220201} is an apocalyptic number.

It is an amenable number.

1201001220201 is a deficient number, since it is larger than the sum of its proper divisors (400333740071).

1201001220201 is an equidigital number, since it uses as much as digits as its factorization.

1201001220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400333740070.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201001220201 its reverse (1020221001021), we get a palindrome (2221222221222).

The spelling of 1201001220201 in words is "one trillion, two hundred one billion, one million, two hundred twenty thousand, two hundred one".