11002521421 has 16 divisors (see below), whose sum is σ = 11392835328. Its totient is φ = 10618316800.

The previous prime is 11002521377. The next prime is 11002521427. The reversal of 11002521421 is 12412520011.

It is a cyclic number.

It is not a de Polignac number, because 11002521421 - 2¹³ = 11002513229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002521427) 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 15 ways as a sum of consecutive naturals, for example, 3995181 + ... + 3997933.

It is an arithmetic number, because the mean of its divisors is an integer number (712052208).

Almost surely, 2^11002521421 is an apocalyptic number.

It is an amenable number.

11002521421 is a deficient number, since it is larger than the sum of its proper divisors (390313907).

11002521421 is a wasteful number, since it uses less digits than its factorization.

11002521421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812.

The product of its (nonzero) digits is 160, while the sum is 19.

The spelling of 11002521421 in words is "eleven billion, two million, five hundred twenty-one thousand, four hundred twenty-one".