11321222021989 has 16 divisors (see below), whose sum is σ = 13001087554560. Its totient is φ = 9749853846000.

The previous prime is 11321222021981. The next prime is 11321222022029. The reversal of 11321222021989 is 98912022212311.

It is a cyclic number.

It is not a de Polignac number, because 11321222021989 - 2³ = 11321222021981 is a prime.

It is a super-2 number, since 2×11321222021989² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321222021981) 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, 2944434 + ... + 5595724.

It is an arithmetic number, because the mean of its divisors is an integer number (812567972160).

Almost surely, 2^{11321222021989} is an apocalyptic number.

11321222021989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11321222021989 is a deficient number, since it is larger than the sum of its proper divisors (1679865532571).

11321222021989 is a wasteful number, since it uses less digits than its factorization.

11321222021989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671752.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 11321222021989 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, nine hundred eighty-nine".