221023211210 has 32 divisors (see below), whose sum is σ = 420292765440. Its totient is φ = 83453775552.

The previous prime is 221023211183. The next prime is 221023211221. The reversal of 221023211210 is 12112320122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2047154 + ... + 2152413.

It is an arithmetic number, because the mean of its divisors is an integer number (13134148920).

Almost surely, 2^221023211210 is an apocalyptic number.

221023211210 is a deficient number, since it is larger than the sum of its proper divisors (199269554230).

221023211210 is a wasteful number, since it uses less digits than its factorization.

221023211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199870.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221023211210 its reverse (12112320122), we get a palindrome (233135531332).

The spelling of 221023211210 in words is "two hundred twenty-one billion, twenty-three million, two hundred eleven thousand, two hundred ten".