11012012100 has 72 divisors (see below), whose sum is σ = 35401588320. Its totient is φ = 2936535840.

The previous prime is 11012012071. The next prime is 11012012119. The reversal of 11012012100 is 121021011.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2036562 + ... + 2041961.

Almost surely, 2^11012012100 is an apocalyptic number.

11012012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012012100 is an abundant number, since it is smaller than the sum of its proper divisors (24389576220).

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

11012012100 is a wasteful number, since it uses less digits than its factorization.

11012012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078546 (or 4078533 counting only the distinct ones).

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

Adding to 11012012100 its reverse (121021011), we get a palindrome (11133033111).

The spelling of 11012012100 in words is "eleven billion, twelve million, twelve thousand, one hundred".