11021101212 has 48 divisors (see below), whose sum is σ = 28061615232. Its totient is φ = 3338786880.

The previous prime is 11021101211. The next prime is 11021101219. The reversal of 11021101212 is 21210112011.

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 (11021101211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565543 + ... + 584705.

It is an arithmetic number, because the mean of its divisors is an integer number (584616984).

Almost surely, 2^11021101212 is an apocalyptic number.

11021101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021101212 is an abundant number, since it is smaller than the sum of its proper divisors (17040514020).

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

11021101212 is a wasteful number, since it uses less digits than its factorization.

11021101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23538 (or 23536 counting only the distinct ones).

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

Adding to 11021101212 its reverse (21210112011), we get a palindrome (32231213223).

The spelling of 11021101212 in words is "eleven billion, twenty-one million, one hundred one thousand, two hundred twelve".