221023002202 has 4 divisors (see below), whose sum is σ = 331534503306. Its totient is φ = 110511501100.

The previous prime is 221023002169. The next prime is 221023002203. The reversal of 221023002202 is 202200320122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202200320122 = 2 ⋅101100160061.

It can be written as a sum of positive squares in only one way, i.e., 187852029561 + 33170972641 = 433419^2 + 182129^2 .

It is not an unprimeable number, because it can be changed into a prime (221023002203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55255750549 + ... + 55255750552.

Almost surely, 2^221023002202 is an apocalyptic number.

221023002202 is a deficient number, since it is larger than the sum of its proper divisors (110511501104).

221023002202 is a wasteful number, since it uses less digits than its factorization.

221023002202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110511501103.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 221023002202 its reverse (202200320122), we get a palindrome (423223322324).

The spelling of 221023002202 in words is "two hundred twenty-one billion, twenty-three million, two thousand, two hundred two".