21122102434 has 8 divisors (see below), whose sum is σ = 31726028880. Its totient is φ = 10546759476.

The previous prime is 21122102431. The next prime is 21122102479. The reversal of 21122102434 is 43420122112.

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

It is a super-2 number, since 2×21122102434² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122102431) 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, 7144024 + ... + 7146979.

It is an arithmetic number, because the mean of its divisors is an integer number (3965753610).

Almost surely, 2^21122102434 is an apocalyptic number.

21122102434 is a deficient number, since it is larger than the sum of its proper divisors (10603926446).

21122102434 is a wasteful number, since it uses less digits than its factorization.

21122102434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14291744.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21122102434 its reverse (43420122112), we get a palindrome (64542224546).

The spelling of 21122102434 in words is "twenty-one billion, one hundred twenty-two million, one hundred two thousand, four hundred thirty-four".