219999999901 has 16 divisors (see below), whose sum is σ = 250500428928. Its totient is φ = 191254201600.

The previous prime is 219999999899. The next prime is 219999999929. The reversal of 219999999901 is 109999999912.

It is not a de Polignac number, because 219999999901 - 2¹ = 219999999899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219999399901) 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, 869865 + ... + 1093921.

It is an arithmetic number, because the mean of its divisors is an integer number (15656276808).

Almost surely, 2^219999999901 is an apocalyptic number.

It is an amenable number.

219999999901 is a deficient number, since it is larger than the sum of its proper divisors (30500429027).

219999999901 is a wasteful number, since it uses less digits than its factorization.

219999999901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227972.

The product of its (nonzero) digits is 86093442, while the sum is 76.

The spelling of 219999999901 in words is "two hundred nineteen billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred one".