1121000021013 has 16 divisors (see below), whose sum is σ = 1509931155456. Its totient is φ = 739728425520.

The previous prime is 1121000020997. The next prime is 1121000021047. The reversal of 1121000021013 is 3101200001211.

It is not a de Polignac number, because 1121000021013 - 2⁴ = 1121000020997 is a prime.

It is a super-2 number, since 2×1121000021013² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121000021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121000021213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3249081 + ... + 3577502.

It is an arithmetic number, because the mean of its divisors is an integer number (94370697216).

Almost surely, 2^{1121000021013} is an apocalyptic number.

It is an amenable number.

1121000021013 is a deficient number, since it is larger than the sum of its proper divisors (388931134443).

1121000021013 is a wasteful number, since it uses less digits than its factorization.

1121000021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827144.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1121000021013 its reverse (3101200001211), we get a palindrome (4222200022224).

The spelling of 1121000021013 in words is "one trillion, one hundred twenty-one billion, twenty-one thousand, thirteen".