139122121210 has 16 divisors (see below), whose sum is σ = 257187922056. Its totient is φ = 54144825408.

The previous prime is 139122121207. The next prime is 139122121219. The reversal of 139122121210 is 12121221931.

It can be written as a sum of positive squares in 4 ways, for example, as 139119302169 + 2819041 = 372987^2 + 1679^2 .

It is not an unprimeable number, because it can be changed into a prime (139122121219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188002497 + ... + 188003236.

Almost surely, 2^139122121210 is an apocalyptic number.

139122121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139122121210 is a deficient number, since it is larger than the sum of its proper divisors (118065800846).

139122121210 is a wasteful number, since it uses less digits than its factorization.

139122121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376005777.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 139122121210 in words is "one hundred thirty-nine billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".