221020212010210 has 64 divisors (see below), whose sum is σ = 411225958091520. Its totient is φ = 85475172706560.

The previous prime is 221020212010159. The next prime is 221020212010249. The reversal of 221020212010210 is 12010212020122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97244656 + ... + 99491524.

It is an arithmetic number, because the mean of its divisors is an integer number (6425405595180).

Almost surely, 2^{221020212010210} is an apocalyptic number.

221020212010210 is a deficient number, since it is larger than the sum of its proper divisors (190205746081310).

221020212010210 is a wasteful number, since it uses less digits than its factorization.

221020212010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249243.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221020212010210 its reverse (12010212020122), we get a palindrome (233030424030332).

The spelling of 221020212010210 in words is "two hundred twenty-one trillion, twenty billion, two hundred twelve million, ten thousand, two hundred ten".