221001012202 has 4 divisors (see below), whose sum is σ = 331501518306. Its totient is φ = 110500506100.

The previous prime is 221001012191. The next prime is 221001012217. The reversal of 221001012202 is 202210100122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143717568201 + 77283444001 = 379101^2 + 277999^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250253049 + ... + 55250253052.

Almost surely, 2^221001012202 is an apocalyptic number.

221001012202 is a deficient number, since it is larger than the sum of its proper divisors (110500506104).

221001012202 is a wasteful number, since it uses less digits than its factorization.

221001012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110500506103.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221001012202 its reverse (202210100122), we get a palindrome (423211112324).

The spelling of 221001012202 in words is "two hundred twenty-one billion, one million, twelve thousand, two hundred two".