1121221020001 has 8 divisors (see below), whose sum is σ = 1145432444544. Its totient is φ = 1097024414640.

The previous prime is 1121221019923. The next prime is 1121221020047. The reversal of 1121221020001 is 1000201221211.

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 1121221020001 - 2¹⁹ = 1121220495713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121221020071) 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, 3551775 + ... + 3854548.

It is an arithmetic number, because the mean of its divisors is an integer number (143179055568).

Almost surely, 2^{1121221020001} is an apocalyptic number.

It is an amenable number.

1121221020001 is a deficient number, since it is larger than the sum of its proper divisors (24211424543).

1121221020001 is an equidigital number, since it uses as much as digits as its factorization.

1121221020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409591.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121221020001 its reverse (1000201221211), we get a palindrome (2121422241212).

The spelling of 1121221020001 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty thousand, one".