139122121212 has 60 divisors (see below), whose sum is σ = 363778680496. Its totient is φ = 46363078080.

The previous prime is 139122121207. The next prime is 139122121219. The reversal of 139122121212 is 212121221931.

It is a super-2 number, since 2×139122121212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 1384512 + ... + 1481592.

Almost surely, 2^139122121212 is an apocalyptic number.

139122121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139122121212 is an abundant number, since it is smaller than the sum of its proper divisors (224656559284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139122121212 is a wasteful number, since it uses less digits than its factorization.

139122121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101520 (or 101509 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The spelling of 139122121212 in words is "one hundred thirty-nine billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".