219102239109 has 16 divisors (see below), whose sum is σ = 314719396992. Its totient is φ = 134784552768.

The previous prime is 219102239101. The next prime is 219102239113. The reversal of 219102239109 is 901932201912.

It is not a de Polignac number, because 219102239109 - 2³ = 219102239101 is a prime.

It is a super-2 number, since 2×219102239109² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219102239101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879489 + ... + 1100774.

It is an arithmetic number, because the mean of its divisors is an integer number (19669962312).

Almost surely, 2^219102239109 is an apocalyptic number.

It is an amenable number.

219102239109 is a deficient number, since it is larger than the sum of its proper divisors (95617157883).

219102239109 is a wasteful number, since it uses less digits than its factorization.

219102239109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983116.

The product of its (nonzero) digits is 17496, while the sum is 39.

The spelling of 219102239109 in words is "two hundred nineteen billion, one hundred two million, two hundred thirty-nine thousand, one hundred nine".