11021011212 has 12 divisors (see below), whose sum is σ = 25715692856. Its totient is φ = 3673670400.

The previous prime is 11021011187. The next prime is 11021011213. The reversal of 11021011212 is 21211012011.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 918417601 = 11021011212 / (1 + 1 + 0 + 2 + 1 + 0 + 1 + 1 + 2 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (11021011213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459208789 + ... + 459208812.

Almost surely, 2^11021011212 is an apocalyptic number.

11021011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021011212 is an abundant number, since it is smaller than the sum of its proper divisors (14694681644).

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

11021011212 is a wasteful number, since it uses less digits than its factorization.

11021011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918417608 (or 918417606 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11021011212 its reverse (21211012011), we get a palindrome (32232023223).

The spelling of 11021011212 in words is "eleven billion, twenty-one million, eleven thousand, two hundred twelve".