117221346407138 has 16 divisors (see below), whose sum is σ = 176188454019000. Its totient is φ = 58491876099072.

The previous prime is 117221346407131. The next prime is 117221346407147. The reversal of 117221346407138 is 831704643122711.

It can be written as a sum of positive squares in 4 ways, for example, as 71371018770769 + 45850327636369 = 8448137^2 + 6771287^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117221346407131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12775298 + ... + 19941186.

Almost surely, 2^{117221346407138} is an apocalyptic number.

117221346407138 is a deficient number, since it is larger than the sum of its proper divisors (58967107611862).

117221346407138 is a wasteful number, since it uses less digits than its factorization.

117221346407138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182469.

The product of its (nonzero) digits is 1354752, while the sum is 50.

Adding to 117221346407138 its reverse (831704643122711), we get a palindrome (948925989529849).

The spelling of 117221346407138 in words is "one hundred seventeen trillion, two hundred twenty-one billion, three hundred forty-six million, four hundred seven thousand, one hundred thirty-eight".