221202023203130 has 16 divisors (see below), whose sum is σ = 399187198692360. Its totient is φ = 88253352186432.

The previous prime is 221202023203111. The next prime is 221202023203157. The reversal of 221202023203130 is 31302320202122.

It can be written as a sum of positive squares in 4 ways, for example, as 189880214768209 + 31321808434921 = 13779703^2 + 5596589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221202023203096 and 221202023203105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28432132769 + ... + 28432140548.

Almost surely, 2^{221202023203130} is an apocalyptic number.

221202023203130 is a deficient number, since it is larger than the sum of its proper divisors (177985175489230).

221202023203130 is a wasteful number, since it uses less digits than its factorization.

221202023203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56864273713.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221202023203130 its reverse (31302320202122), we get a palindrome (252504343405252).

The spelling of 221202023203130 in words is "two hundred twenty-one trillion, two hundred two billion, twenty-three million, two hundred three thousand, one hundred thirty".