221222100220201 has 12 divisors (see below), whose sum is σ = 232075810131088. Its totient is φ = 210856031469864.

The previous prime is 221222100220157. The next prime is 221222100220223. The reversal of 221222100220201 is 102022001222122.

It is not a de Polignac number, because 221222100220201 - 2²³ = 221222091831593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221222100250201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 738700515 + ... + 738999928.

Almost surely, 2^{221222100220201} is an apocalyptic number.

It is an amenable number.

221222100220201 is a deficient number, since it is larger than the sum of its proper divisors (10853709910887).

221222100220201 is a wasteful number, since it uses less digits than its factorization.

221222100220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477700772 (or 1477700749 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221222100220201 its reverse (102022001222122), we get a palindrome (323244101442323).

The spelling of 221222100220201 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred million, two hundred twenty thousand, two hundred one".