122421510502 has 4 divisors (see below), whose sum is σ = 183632265756. Its totient is φ = 61210755250.

The previous prime is 122421510481. The next prime is 122421510509. The reversal of 122421510502 is 205015124221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205015124221 = 233 ⋅879893237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421510509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30605377624 + ... + 30605377627.

It is an arithmetic number, because the mean of its divisors is an integer number (45908066439).

Almost surely, 2^122421510502 is an apocalyptic number.

122421510502 is a deficient number, since it is larger than the sum of its proper divisors (61210755254).

122421510502 is an equidigital number, since it uses as much as digits as its factorization.

122421510502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61210755253.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 122421510502 its reverse (205015124221), we get a palindrome (327436634723).

The spelling of 122421510502 in words is "one hundred twenty-two billion, four hundred twenty-one million, five hundred ten thousand, five hundred two".