1201221032401 has 16 divisors (see below), whose sum is σ = 1325591584128. Its totient is φ = 1081434499200.

The previous prime is 1201221032387. The next prime is 1201221032411. The reversal of 1201221032401 is 1042301221021.

It is not a de Polignac number, because 1201221032401 - 2⁷ = 1201221032273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201221032411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347670 + ... + 2053936.

It is an arithmetic number, because the mean of its divisors is an integer number (82849474008).

Almost surely, 2^{1201221032401} is an apocalyptic number.

It is an amenable number.

1201221032401 is a deficient number, since it is larger than the sum of its proper divisors (124370551727).

1201221032401 is a wasteful number, since it uses less digits than its factorization.

1201221032401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709512.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1201221032401 its reverse (1042301221021), we get a palindrome (2243522253422).

The spelling of 1201221032401 in words is "one trillion, two hundred one billion, two hundred twenty-one million, thirty-two thousand, four hundred one".