1121021011401 has 32 divisors (see below), whose sum is σ = 1546058880000. Its totient is φ = 721958065920.

The previous prime is 1121021011399. The next prime is 1121021011417. The reversal of 1121021011401 is 1041101201211.

It is a happy number.

It is not a de Polignac number, because 1121021011401 - 2¹ = 1121021011399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121021011301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42144616 + ... + 42171206.

It is an arithmetic number, because the mean of its divisors is an integer number (48314340000).

Almost surely, 2^{1121021011401} is an apocalyptic number.

It is an amenable number.

1121021011401 is a deficient number, since it is larger than the sum of its proper divisors (425037868599).

1121021011401 is a wasteful number, since it uses less digits than its factorization.

1121021011401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29329.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121021011401 its reverse (1041101201211), we get a palindrome (2162122212612).

The spelling of 1121021011401 in words is "one trillion, one hundred twenty-one billion, twenty-one million, eleven thousand, four hundred one".