122421639628 has 6 divisors (see below), whose sum is σ = 214237869356. Its totient is φ = 61210819812.

The previous prime is 122421639583. The next prime is 122421639643. The reversal of 122421639628 is 826936124221.

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 as a sum of consecutive naturals, namely, 15302704950 + ... + 15302704957.

Almost surely, 2^122421639628 is an apocalyptic number.

It is an amenable number.

122421639628 is a deficient number, since it is larger than the sum of its proper divisors (91816229728).

122421639628 is a wasteful number, since it uses less digits than its factorization.

122421639628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30605409911 (or 30605409909 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The spelling of 122421639628 in words is "one hundred twenty-two billion, four hundred twenty-one million, six hundred thirty-nine thousand, six hundred twenty-eight".