122101639 has 8 divisors (see below), whose sum is σ = 136300032. Its totient is φ = 108419640.

The previous prime is 122101607. The next prime is 122101669. The reversal of 122101639 is 936101221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122101639 - 2⁵ = 122101607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101669) 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, 128599 + ... + 129544.

It is an arithmetic number, because the mean of its divisors is an integer number (17037504).

Almost surely, 2^122101639 is an apocalyptic number.

122101639 is a deficient number, since it is larger than the sum of its proper divisors (14198393).

122101639 is a wasteful number, since it uses less digits than its factorization.

122101639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258197.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 122101639 is about 11049.9610406553. The cubic root of 122101639 is about 496.1052594309.

It can be divided in two parts, 122 and 101639, that added together give a square (101761 = 319²).

The spelling of 122101639 in words is "one hundred twenty-two million, one hundred one thousand, six hundred thirty-nine".