219895252011 has 16 divisors (see below), whose sum is σ = 325779448320. Its totient is φ = 146592917640.

The previous prime is 219895252009. The next prime is 219895252039. The reversal of 219895252011 is 110252598912.

It is a happy number.

219895252011 is a `hidden beast` number, since 2 + 1 + 98 + 9 + 525 + 20 + 11 = 666.

It is not a de Polignac number, because 219895252011 - 2¹ = 219895252009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (219895252091) 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, 1211826 + ... + 1381416.

It is an arithmetic number, because the mean of its divisors is an integer number (20361215520).

Almost surely, 2^219895252011 is an apocalyptic number.

219895252011 is a deficient number, since it is larger than the sum of its proper divisors (105884196309).

219895252011 is a wasteful number, since it uses less digits than its factorization.

219895252011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217623 (or 217617 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

It can be divided in two parts, 219895 and 252011, that added together give a triangular number (471906 = T₉₇₁).

The spelling of 219895252011 in words is "two hundred nineteen billion, eight hundred ninety-five million, two hundred fifty-two thousand, eleven".