221021115082 has 8 divisors (see below), whose sum is σ = 331536130596. Its totient is φ = 110509071552.

The previous prime is 221021115053. The next prime is 221021115101. The reversal of 221021115082 is 280511120122.

It is a happy number.

221021115082 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 203860377081 + 17160738001 = 451509^2 + 130999^2 .

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

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, 546703 + ... + 860770.

Almost surely, 2^221021115082 is an apocalyptic number.

221021115082 is a deficient number, since it is larger than the sum of its proper divisors (110515015514).

221021115082 is a wasteful number, since it uses less digits than its factorization.

221021115082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485992.

The product of its (nonzero) digits is 640, while the sum is 25.

The spelling of 221021115082 in words is "two hundred twenty-one billion, twenty-one million, one hundred fifteen thousand, eighty-two".