11021020212 has 24 divisors (see below), whose sum is σ = 25970327712. Its totient is φ = 3637300000.

The previous prime is 11021020201. The next prime is 11021020229. The reversal of 11021020212 is 21202012011.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4545414 + ... + 4547837.

It is an arithmetic number, because the mean of its divisors is an integer number (1082096988).

Almost surely, 2^11021020212 is an apocalyptic number.

11021020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021020212 is an abundant number, since it is smaller than the sum of its proper divisors (14949307500).

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

11021020212 is a wasteful number, since it uses less digits than its factorization.

11021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093359 (or 9093357 counting only the distinct ones).

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

Adding to 11021020212 its reverse (21202012011), we get a palindrome (32223032223).

The spelling of 11021020212 in words is "eleven billion, twenty-one million, twenty thousand, two hundred twelve".