118929109321 has 27 divisors (see below), whose sum is σ = 132408768583. Its totient is φ = 106741376720.

The previous prime is 118929109291. The next prime is 118929109331. The reversal of 118929109321 is 123901929811.

The square root of 118929109321 is 344861.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 112523348025 + 6405761296 = 335445^2 + 80036^2 .

It is not a de Polignac number, because 118929109321 - 2⁵ = 118929109289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118929109331) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 405901251 + ... + 405901543.

Almost surely, 2^118929109321 is an apocalyptic number.

118929109321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

118929109321 is the 344861-st square number.

118929109321 is the 172431-st centered octagonal number.

It is an amenable number.

118929109321 is a deficient number, since it is larger than the sum of its proper divisors (13479659262).

118929109321 is an frugal number, since it uses more digits than its factorization.

118929109321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 46.

The spelling of 118929109321 in words is "one hundred eighteen billion, nine hundred twenty-nine million, one hundred nine thousand, three hundred twenty-one".