1201011201221 has 8 divisors (see below), whose sum is σ = 1294854860544. Its totient is φ = 1107375853680.

The previous prime is 1201011201197. The next prime is 1201011201241. The reversal of 1201011201221 is 1221021101021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201011201221 - 2²⁶ = 1200944092357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201011201196 and 1201011201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201011201241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52065965 + ... + 52089026.

It is an arithmetic number, because the mean of its divisors is an integer number (161856857568).

Almost surely, 2^{1201011201221} is an apocalyptic number.

It is an amenable number.

1201011201221 is a deficient number, since it is larger than the sum of its proper divisors (93843659323).

1201011201221 is a wasteful number, since it uses less digits than its factorization.

1201011201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104155891.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201011201221 its reverse (1221021101021), we get a palindrome (2422032302242).

The spelling of 1201011201221 in words is "one trillion, two hundred one billion, eleven million, two hundred one thousand, two hundred twenty-one".