122499999998 has 16 divisors (see below), whose sum is σ = 188438443200. Its totient is φ = 59690467200.

The previous prime is 122499999997. The next prime is 122500000027. The reversal of 122499999998 is 899999994221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122499999997) 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 7 ways as a sum of consecutive naturals, for example, 745223 + ... + 894626.

It is an arithmetic number, because the mean of its divisors is an integer number (11777402700).

Almost surely, 2^122499999998 is an apocalyptic number.

122499999998 is a deficient number, since it is larger than the sum of its proper divisors (65938443202).

122499999998 is a wasteful number, since it uses less digits than its factorization.

122499999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640803.

The product of its digits is 612220032, while the sum is 80.

The spelling of 122499999998 in words is "one hundred twenty-two billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".