101219939 has 8 divisors (see below), whose sum is σ = 104440560. Its totient is φ = 98035200.

The previous prime is 101219933. The next prime is 101219959. The reversal of 101219939 is 939912101.

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 101219939 - 2¹² = 101215843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101219899 and 101219908.

It is not an unprimeable number, because it can be changed into a prime (101219933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182 + ... + 14579.

It is an arithmetic number, because the mean of its divisors is an integer number (13055070).

Almost surely, 2^101219939 is an apocalyptic number.

101219939 is a deficient number, since it is larger than the sum of its proper divisors (3220621).

101219939 is a wasteful number, since it uses less digits than its factorization.

101219939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17941.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 101219939 is about 10060.8120447606. The cubic root of 101219939 is about 466.0387446526.

The spelling of 101219939 in words is "one hundred one million, two hundred nineteen thousand, nine hundred thirty-nine".