219999888900001 has 4 divisors (see below), whose sum is σ = 251428444457152. Its totient is φ = 188571333342852.

The previous prime is 219999888899929. The next prime is 219999888900023. The reversal of 219999888900001 is 100009888999912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 219999888900001 - 2⁹ = 219999888899489 is a prime.

It is a super-2 number, since 2×219999888900001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219999888900061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15714277778565 + ... + 15714277778578.

It is an arithmetic number, because the mean of its divisors is an integer number (62857111114288).

Almost surely, 2^{219999888900001} is an apocalyptic number.

It is an amenable number.

219999888900001 is a deficient number, since it is larger than the sum of its proper divisors (31428555557151).

219999888900001 is an equidigital number, since it uses as much as digits as its factorization.

219999888900001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31428555557150.

The product of its (nonzero) digits is 60466176, while the sum is 73.

The spelling of 219999888900001 in words is "two hundred nineteen trillion, nine hundred ninety-nine billion, eight hundred eighty-eight million, nine hundred thousand, one".