139106222 has 4 divisors (see below), whose sum is σ = 208659336. Its totient is φ = 69553110.

The previous prime is 139106221. The next prime is 139106249. The reversal of 139106222 is 222601931.

139106222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222601931 = 409 ⋅544259.

It is a super-2 number, since 2×139106222² = 38701081998226568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139106191 and 139106200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139106221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34776554 + ... + 34776557.

It is an arithmetic number, because the mean of its divisors is an integer number (52164834).

Almost surely, 2^139106222 is an apocalyptic number.

139106222 is a deficient number, since it is larger than the sum of its proper divisors (69553114).

139106222 is an equidigital number, since it uses as much as digits as its factorization.

139106222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69553113.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 139106222 is about 11794.3300784741. The cubic root of 139106222 is about 518.1420653556.

The spelling of 139106222 in words is "one hundred thirty-nine million, one hundred six thousand, two hundred twenty-two".