11021211012 has 24 divisors (see below), whose sum is σ = 29389896256. Its totient is φ = 3148917408.

The previous prime is 11021210987. The next prime is 11021211013. The reversal of 11021211012 is 21011212011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (11021211013) 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, 65602363 + ... + 65602530.

Almost surely, 2^11021211012 is an apocalyptic number.

11021211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021211012 is an abundant number, since it is smaller than the sum of its proper divisors (18368685244).

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

11021211012 is a wasteful number, since it uses less digits than its factorization.

11021211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131204907 (or 131204905 counting only the distinct ones).

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

Adding to 11021211012 its reverse (21011212011), we get a palindrome (32032423023).

Subtracting 11021211012 from its reverse (21011212011), we obtain a palindrome (9990000999).

The spelling of 11021211012 in words is "eleven billion, twenty-one million, two hundred eleven thousand, twelve".