11212021021222 has 32 divisors (see below), whose sum is σ = 20235258996480. Its totient is φ = 4551564998880.

The previous prime is 11212021021193. The next prime is 11212021021249. The reversal of 11212021021222 is 22212012021211.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 11212021021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392148 + ... + 4935799.

It is an arithmetic number, because the mean of its divisors is an integer number (632351843640).

Almost surely, 2^{11212021021222} is an apocalyptic number.

11212021021222 is a deficient number, since it is larger than the sum of its proper divisors (9023237975258).

11212021021222 is a wasteful number, since it uses less digits than its factorization.

11212021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334636.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11212021021222 its reverse (22212012021211), we get a palindrome (33424033042433).

The spelling of 11212021021222 in words is "eleven trillion, two hundred twelve billion, twenty-one million, twenty-one thousand, two hundred twenty-two".