11002101021 has 64 divisors (see below), whose sum is σ = 17583298560. Its totient is φ = 6774071040.

The previous prime is 11002101013. The next prime is 11002101023. The reversal of 11002101021 is 12010120011.

It is a happy number.

It is not a de Polignac number, because 11002101021 - 2³ = 11002101013 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 11002100994 and 11002101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002101023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10670776 + ... + 10671806.

It is an arithmetic number, because the mean of its divisors is an integer number (274739040).

Almost surely, 2^11002101021 is an apocalyptic number.

It is an amenable number.

11002101021 is a deficient number, since it is larger than the sum of its proper divisors (6581197539).

11002101021 is a wasteful number, since it uses less digits than its factorization.

11002101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471 (or 1465 counting only the distinct ones).

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

Adding to 11002101021 its reverse (12010120011), we get a palindrome (23012221032).

The spelling of 11002101021 in words is "eleven billion, two million, one hundred one thousand, twenty-one".