11211000120 has 96 divisors (see below), whose sum is σ = 36979647120. Its totient is φ = 2944972800.

The previous prime is 11211000113. The next prime is 11211000131. The reversal of 11211000120 is 2100011211.

It is a happy number.

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

It is a congruent number.

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, 208281 + ... + 256520.

Almost surely, 2^11211000120 is an apocalyptic number.

11211000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211000120 is an abundant number, since it is smaller than the sum of its proper divisors (25768647000).

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

11211000120 is a wasteful number, since it uses less digits than its factorization.

11211000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464885 (or 464878 counting only the distinct ones).

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

Adding to 11211000120 its reverse (2100011211), we get a palindrome (13311011331).

The spelling of 11211000120 in words is "eleven billion, two hundred eleven million, one hundred twenty", and thus it is an aban number.