1201222211001 has 8 divisors (see below), whose sum is σ = 1635706840704. Its totient is φ = 783776194320.

The previous prime is 1201222210999. The next prime is 1201222211009. The reversal of 1201222211001 is 1001122221021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201222211001 - 2¹ = 1201222210999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201222211009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4259653090 + ... + 4259653371.

It is an arithmetic number, because the mean of its divisors is an integer number (204463355088).

Almost surely, 2^{1201222211001} is an apocalyptic number.

It is an amenable number.

1201222211001 is a deficient number, since it is larger than the sum of its proper divisors (434484629703).

1201222211001 is an equidigital number, since it uses as much as digits as its factorization.

1201222211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8519306511.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1201222211001 its reverse (1001122221021), we get a palindrome (2202344432022).

The spelling of 1201222211001 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred eleven thousand, one".