1201001203221 has 16 divisors (see below), whose sum is σ = 1623777832320. Its totient is φ = 789452870400.

The previous prime is 1201001203189. The next prime is 1201001203247. The reversal of 1201001203221 is 1223021001021.

It is not a de Polignac number, because 1201001203221 - 2⁵ = 1201001203189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201001203221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201001208221) 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, 151705 + ... + 1557246.

It is an arithmetic number, because the mean of its divisors is an integer number (101486114520).

Almost surely, 2^{1201001203221} is an apocalyptic number.

It is an amenable number.

1201001203221 is a deficient number, since it is larger than the sum of its proper divisors (422776629099).

1201001203221 is a wasteful number, since it uses less digits than its factorization.

1201001203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712236.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1201001203221 its reverse (1223021001021), we get a palindrome (2424022204242).

The spelling of 1201001203221 in words is "one trillion, two hundred one billion, one million, two hundred three thousand, two hundred twenty-one".