11022021012 has 24 divisors (see below), whose sum is σ = 25734505216. Its totient is φ = 3671656128.

The previous prime is 11022020951. The next prime is 11022021013. The reversal of 11022021012 is 21012022011.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022021013) 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, 274273 + ... + 311880.

Almost surely, 2^11022021012 is an apocalyptic number.

11022021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11022021012 is an abundant number, since it is smaller than the sum of its proper divisors (14712484204).

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

11022021012 is a wasteful number, since it uses less digits than its factorization.

11022021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587727 (or 587725 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11022021012 its reverse (21012022011), we get a palindrome (32034043023).

Subtracting 11022021012 from its reverse (21012022011), we obtain a palindrome (9990000999).

The spelling of 11022021012 in words is "eleven billion, twenty-two million, twenty-one thousand, twelve".