21223213221122 has 8 divisors (see below), whose sum is σ = 34728894361872. Its totient is φ = 9646915100500.

The previous prime is 21223213221113. The next prime is 21223213221127. The reversal of 21223213221122 is 22112231232212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21223213221091 and 21223213221100.

It is not an unprimeable number, because it can be changed into a prime (21223213221127) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 482345755004 + ... + 482345755047.

It is an arithmetic number, because the mean of its divisors is an integer number (4341111795234).

Almost surely, 2^{21223213221122} is an apocalyptic number.

21223213221122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21223213221122 is a deficient number, since it is larger than the sum of its proper divisors (13505681140750).

21223213221122 is a wasteful number, since it uses less digits than its factorization.

21223213221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964691510064.

The product of its digits is 2304, while the sum is 26.

Adding to 21223213221122 its reverse (22112231232212), we get a palindrome (43335444453334).

The spelling of 21223213221122 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirteen million, two hundred twenty-one thousand, one hundred twenty-two".