11012020120 has 32 divisors (see below), whose sum is σ = 25183231920. Its totient is φ = 4332597120.

The previous prime is 11012020111. The next prime is 11012020121. The reversal of 11012020120 is 2102021011.

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 = 11012020097 and 11012020106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012020121) 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, 2254122 + ... + 2259001.

Almost surely, 2^11012020120 is an apocalyptic number.

11012020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012020120 is an abundant number, since it is smaller than the sum of its proper divisors (14171211800).

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

11012020120 is a wasteful number, since it uses less digits than its factorization.

11012020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513195 (or 4513191 counting only the distinct ones).

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

Adding to 11012020120 its reverse (2102021011), we get a palindrome (13114041131).

The spelling of 11012020120 in words is "eleven billion, twelve million, twenty thousand, one hundred twenty".