21212022098 has 8 divisors (see below), whose sum is σ = 31819894092. Its totient is φ = 10605390736.

The previous prime is 21212022071. The next prime is 21212022127. The reversal of 21212022098 is 89022021212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13148520889 + 8063501209 = 114667^2 + 89797^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21212022098.

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, 266165 + ... + 336552.

Almost surely, 2^21212022098 is an apocalyptic number.

21212022098 is a deficient number, since it is larger than the sum of its proper divisors (10607871994).

21212022098 is a wasteful number, since it uses less digits than its factorization.

21212022098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620316.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 21212022098 in words is "twenty-one billion, two hundred twelve million, twenty-two thousand, ninety-eight".