122157136462 has 4 divisors (see below), whose sum is σ = 183235704696. Its totient is φ = 61078568230.

The previous prime is 122157136393. The next prime is 122157136469. The reversal of 122157136462 is 264631751221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122157136469) 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 as a sum of consecutive naturals, namely, 30539284114 + ... + 30539284117.

It is an arithmetic number, because the mean of its divisors is an integer number (45808926174).

Almost surely, 2^122157136462 is an apocalyptic number.

122157136462 is a deficient number, since it is larger than the sum of its proper divisors (61078568234).

122157136462 is an equidigital number, since it uses as much as digits as its factorization.

122157136462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61078568233.

The product of its digits is 120960, while the sum is 40.

Adding to 122157136462 its reverse (264631751221), we get a palindrome (386788887683).

The spelling of 122157136462 in words is "one hundred twenty-two billion, one hundred fifty-seven million, one hundred thirty-six thousand, four hundred sixty-two".