21112222102 has 8 divisors (see below), whose sum is σ = 31981881312. Its totient is φ = 10451595000.

The previous prime is 21112222081. The next prime is 21112222121. The reversal of 21112222102 is 20122221112.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52257774 + ... + 52258177.

It is an arithmetic number, because the mean of its divisors is an integer number (3997735164).

Almost surely, 2^21112222102 is an apocalyptic number.

21112222102 is a deficient number, since it is larger than the sum of its proper divisors (10869659210).

21112222102 is a wasteful number, since it uses less digits than its factorization.

21112222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104516054.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21112222102 its reverse (20122221112), we get a palindrome (41234443214).

The spelling of 21112222102 in words is "twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred two".