11002120101 has 24 divisors (see below), whose sum is σ = 18167048640. Its totient is φ = 6285257856.

The previous prime is 11002120057. The next prime is 11002120111. The reversal of 11002120101 is 10102120011.

It is a happy number.

It is not a de Polignac number, because 11002120101 - 2⁶ = 11002120037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002120111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239661 + ... + 281853.

It is an arithmetic number, because the mean of its divisors is an integer number (756960360).

Almost surely, 2^11002120101 is an apocalyptic number.

It is an amenable number.

11002120101 is a deficient number, since it is larger than the sum of its proper divisors (7164928539).

11002120101 is a wasteful number, since it uses less digits than its factorization.

11002120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46345 (or 46342 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11002120101 its reverse (10102120011), we get a palindrome (21104240112).

The spelling of 11002120101 in words is "eleven billion, two million, one hundred twenty thousand, one hundred one".