221222021021210 has 64 divisors (see below), whose sum is σ = 434593362925440. Its totient is φ = 80408494817280.

The previous prime is 221222021021129. The next prime is 221222021021233. The reversal of 221222021021210 is 12120120222122.

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, 6863199254 + ... + 6863231486.

It is an arithmetic number, because the mean of its divisors is an integer number (6790521295710).

Almost surely, 2^{221222021021210} is an apocalyptic number.

221222021021210 is a deficient number, since it is larger than the sum of its proper divisors (213371341904230).

221222021021210 is a wasteful number, since it uses less digits than its factorization.

221222021021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58143.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221222021021210 its reverse (12120120222122), we get a palindrome (233342141243332).

The spelling of 221222021021210 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, twenty-one million, twenty-one thousand, two hundred ten".