221867022050 has 24 divisors (see below), whose sum is σ = 414385018212. Its totient is φ = 88378560000.

The previous prime is 221867022029. The next prime is 221867022073. The reversal of 221867022050 is 50220768122.

It can be written as a sum of positive squares in 6 ways, for example, as 155361317281 + 66505704769 = 394159^2 + 257887^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221867022050.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9194051 + ... + 9218150.

Almost surely, 2^221867022050 is an apocalyptic number.

221867022050 is a deficient number, since it is larger than the sum of its proper divisors (192517996162).

221867022050 is a wasteful number, since it uses less digits than its factorization.

221867022050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18412454 (or 18412449 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 221867022050 in words is "two hundred twenty-one billion, eight hundred sixty-seven million, twenty-two thousand, fifty".