11012012020 has 24 divisors (see below), whose sum is σ = 24342343200. Its totient is φ = 4172972832.

The previous prime is 11012011991. The next prime is 11012012023. The reversal of 11012012020 is 2021021011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11012011988 and 11012012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012012023) 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, 14489110 + ... + 14489869.

It is an arithmetic number, because the mean of its divisors is an integer number (1014264300).

Almost surely, 2^11012012020 is an apocalyptic number.

11012012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012012020 is an abundant number, since it is smaller than the sum of its proper divisors (13330331180).

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

11012012020 is a wasteful number, since it uses less digits than its factorization.

11012012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28979007 (or 28979005 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11012012020 its reverse (2021021011), we get a palindrome (13033033031).

The spelling of 11012012020 in words is "eleven billion, twelve million, twelve thousand, twenty".