1201122201221 has 8 divisors (see below), whose sum is σ = 1293742396320. Its totient is φ = 1111442329872.

The previous prime is 1201122201199. The next prime is 1201122201247. The reversal of 1201122201221 is 1221022211021.

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 1201122201221 - 2¹⁸ = 1201121939077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201122201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122261221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735080090 + ... + 735081723.

It is an arithmetic number, because the mean of its divisors is an integer number (161717799540).

Almost surely, 2^{1201122201221} is an apocalyptic number.

It is an amenable number.

1201122201221 is a deficient number, since it is larger than the sum of its proper divisors (92620195099).

1201122201221 is a wasteful number, since it uses less digits than its factorization.

1201122201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470161875.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1201122201221 its reverse (1221022211021), we get a palindrome (2422144412242).

The spelling of 1201122201221 in words is "one trillion, two hundred one billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty-one".