221020202210 has 32 divisors (see below), whose sum is σ = 399945313152. Its totient is φ = 87939895680.

The previous prime is 221020202201. The next prime is 221020202213. The reversal of 221020202210 is 12202020122.

It is not an unprimeable number, because it can be changed into a prime (221020202213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3868814 + ... + 3925526.

It is an arithmetic number, because the mean of its divisors is an integer number (12498291036).

Almost surely, 2^221020202210 is an apocalyptic number.

221020202210 is a deficient number, since it is larger than the sum of its proper divisors (178925110942).

221020202210 is a wasteful number, since it uses less digits than its factorization.

221020202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58778.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221020202210 its reverse (12202020122), we get a palindrome (233222222332).

The spelling of 221020202210 in words is "two hundred twenty-one billion, twenty million, two hundred two thousand, two hundred ten".