11020030021 has 32 divisors (see below), whose sum is σ = 14821632000. Its totient is φ = 7912831680.

The previous prime is 11020029991. The next prime is 11020030031. The reversal of 11020030021 is 12003002011.

It is not a de Polignac number, because 11020030021 - 2⁷ = 11020029893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020030031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 590410 + ... + 608788.

It is an arithmetic number, because the mean of its divisors is an integer number (463176000).

Almost surely, 2^11020030021 is an apocalyptic number.

11020030021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11020030021 is a deficient number, since it is larger than the sum of its proper divisors (3801601979).

11020030021 is a wasteful number, since it uses less digits than its factorization.

11020030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19009.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 11020030021 its reverse (12003002011), we get a palindrome (23023032032).

The spelling of 11020030021 in words is "eleven billion, twenty million, thirty thousand, twenty-one".