21212222095 has 8 divisors (see below), whose sum is σ = 25556081040. Its totient is φ = 16902168000.

The previous prime is 21212222093. The next prime is 21212222123. The reversal of 21212222095 is 59022221212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21212222095 - 2¹ = 21212222093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212222093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8449830 + ... + 8452339.

It is an arithmetic number, because the mean of its divisors is an integer number (3194510130).

Almost surely, 2^21212222095 is an apocalyptic number.

21212222095 is a deficient number, since it is larger than the sum of its proper divisors (4343858945).

21212222095 is a wasteful number, since it uses less digits than its factorization.

21212222095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16902425.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 21212222095 in words is "twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, ninety-five".