11020203120 has 40 divisors (see below), whose sum is σ = 34162630416. Its totient is φ = 2938720768.

The previous prime is 11020203109. The next prime is 11020203121. The reversal of 11020203120 is 2130202011.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11020203096 and 11020203105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020203121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22958517 + ... + 22958996.

Almost surely, 2^11020203120 is an apocalyptic number.

11020203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020203120 is an abundant number, since it is smaller than the sum of its proper divisors (23142427296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11020203120 is a wasteful number, since it uses less digits than its factorization.

11020203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45917529 (or 45917523 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 11020203120 its reverse (2130202011), we get a palindrome (13150405131).

The spelling of 11020203120 in words is "eleven billion, twenty million, two hundred three thousand, one hundred twenty".