221010033042 has 24 divisors (see below), whose sum is σ = 479631197916. Its totient is φ = 73550606976.

The previous prime is 221010033037. The next prime is 221010033107. The reversal of 221010033042 is 240330010122.

It can be written as a sum of positive squares in 2 ways, for example, as 136752779601 + 84257253441 = 369801^2 + 290271^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 9938923 + ... + 9961134.

Almost surely, 2^221010033042 is an apocalyptic number.

221010033042 is an abundant number, since it is smaller than the sum of its proper divisors (258621164874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221010033042 is a wasteful number, since it uses less digits than its factorization.

221010033042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19900682 (or 19900679 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221010033042 its reverse (240330010122), we get a palindrome (461340043164).

The spelling of 221010033042 in words is "two hundred twenty-one billion, ten million, thirty-three thousand, forty-two".