1121021112001 has 16 divisors (see below), whose sum is σ = 1356570198144. Its totient is φ = 904326200064.

The previous prime is 1121021111957. The next prime is 1121021112023. The reversal of 1121021112001 is 1002111201211.

It is a happy number.

It is not a de Polignac number, because 1121021112001 - 2¹⁷ = 1121020980929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121021712001) 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, 4512046 + ... + 4754008.

It is an arithmetic number, because the mean of its divisors is an integer number (84785637384).

Almost surely, 2^{1121021112001} is an apocalyptic number.

It is an amenable number.

1121021112001 is a deficient number, since it is larger than the sum of its proper divisors (235549086143).

1121021112001 is a wasteful number, since it uses less digits than its factorization.

1121021112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280920.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1121021112001 its reverse (1002111201211), we get a palindrome (2123132313212).

It can be divided in two parts, 11 and 21021112001, that added together give a palindrome (21021112012).

The spelling of 1121021112001 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred twelve thousand, one".