1121021221201 has 16 divisors (see below), whose sum is σ = 1293368114304. Its totient is φ = 951727739904.

The previous prime is 1121021221181. The next prime is 1121021221267. The reversal of 1121021221201 is 1021221201211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121021221201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121021225201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4225201 + ... + 4482673.

It is an arithmetic number, because the mean of its divisors is an integer number (80835507144).

Almost surely, 2^{1121021221201} is an apocalyptic number.

It is an amenable number.

1121021221201 is a deficient number, since it is larger than the sum of its proper divisors (172346893103).

1121021221201 is a wasteful number, since it uses less digits than its factorization.

1121021221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263400.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1121021221201 its reverse (1021221201211), we get a palindrome (2142242422412).

The spelling of 1121021221201 in words is "one trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty-one thousand, two hundred one".