11021002001123 has 4 divisors (see below), whose sum is σ = 11037377933448. Its totient is φ = 11004626068800.

The previous prime is 11021002001111. The next prime is 11021002001183. The reversal of 11021002001123 is 32110020012011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021002001123 is a prime.

It is a super-2 number, since 2×11021002001123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021002001098 and 11021002001107.

It is not an unprimeable number, because it can be changed into a prime (11021002001183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8187965153 + ... + 8187966498.

It is an arithmetic number, because the mean of its divisors is an integer number (2759344483362).

Almost surely, 2^{11021002001123} is an apocalyptic number.

11021002001123 is a deficient number, since it is larger than the sum of its proper divisors (16375932325).

11021002001123 is an equidigital number, since it uses as much as digits as its factorization.

11021002001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16375932324.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11021002001123 its reverse (32110020012011), we get a palindrome (43131022013134).

The spelling of 11021002001123 in words is "eleven trillion, twenty-one billion, two million, one thousand, one hundred twenty-three".