21111343022 has 32 divisors (see below), whose sum is σ = 39543704064. Its totient is φ = 8212125600.

The previous prime is 21111343013. The next prime is 21111343037. The reversal of 21111343022 is 22034311112.

It is a junction number, because it is equal to n+sod(n) for n = 21111342985 and 21111343003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11453 + ... + 205800.

It is an arithmetic number, because the mean of its divisors is an integer number (1235740752).

Almost surely, 2^21111343022 is an apocalyptic number.

21111343022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21111343022 is a deficient number, since it is larger than the sum of its proper divisors (18432361042).

21111343022 is a wasteful number, since it uses less digits than its factorization.

21111343022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217904.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21111343022 its reverse (22034311112), we get a palindrome (43145654134).

The spelling of 21111343022 in words is "twenty-one billion, one hundred eleven million, three hundred forty-three thousand, twenty-two".