21222211095 has 24 divisors (see below), whose sum is σ = 36788615136. Its totient is φ = 11317451328.

The previous prime is 21222211093. The next prime is 21222211097. The reversal of 21222211095 is 59011222212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21222211093) and next prime (21222211097).

It is not a de Polignac number, because 21222211095 - 2¹ = 21222211093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222211093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794934 + ... + 821196.

It is an arithmetic number, because the mean of its divisors is an integer number (1532858964).

Almost surely, 2^21222211095 is an apocalyptic number.

21222211095 is a deficient number, since it is larger than the sum of its proper divisors (15566404041).

21222211095 is a wasteful number, since it uses less digits than its factorization.

21222211095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44231 (or 44228 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 21222211095 in words is "twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, ninety-five".