11002121007 has 16 divisors (see below), whose sum is σ = 15498224640. Its totient is φ = 6931145312.

The previous prime is 11002121003. The next prime is 11002121023. The reversal of 11002121007 is 70012120011.

It is a cyclic number.

It is not a de Polignac number, because 11002121007 - 2² = 11002121003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002121003) 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, 1341243 + ... + 1349420.

It is an arithmetic number, because the mean of its divisors is an integer number (968639040).

Almost surely, 2^11002121007 is an apocalyptic number.

11002121007 is a deficient number, since it is larger than the sum of its proper divisors (4496103633).

11002121007 is a wasteful number, since it uses less digits than its factorization.

11002121007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690742.

The product of its (nonzero) digits is 28, while the sum is 15.

Adding to 11002121007 its reverse (70012120011), we get a palindrome (81014241018).

The spelling of 11002121007 in words is "eleven billion, two million, one hundred twenty-one thousand, seven".