21234400443122 has 8 divisors (see below), whose sum is σ = 31860631466496. Its totient is φ = 10614189954292.

The previous prime is 21234400443121. The next prime is 21234400443199. The reversal of 21234400443122 is 22134400443212.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21234400443121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505124818 + ... + 1505138925.

It is an arithmetic number, because the mean of its divisors is an integer number (3982578933312).

Almost surely, 2^{21234400443122} is an apocalyptic number.

21234400443122 is a deficient number, since it is larger than the sum of its proper divisors (10626231023374).

21234400443122 is a wasteful number, since it uses less digits than its factorization.

21234400443122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010267272.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 21234400443122 its reverse (22134400443212), we get a palindrome (43368800886334).

The spelling of 21234400443122 in words is "twenty-one trillion, two hundred thirty-four billion, four hundred million, four hundred forty-three thousand, one hundred twenty-two".