222200101221 has 32 divisors (see below), whose sum is σ = 342779501568. Its totient is φ = 125406005760.

The previous prime is 222200101163. The next prime is 222200101237. The reversal of 222200101221 is 122101002222.

It is not a de Polignac number, because 222200101221 - 2⁷ = 222200101093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222200101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222200101121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 889086 + ... + 1111248.

It is an arithmetic number, because the mean of its divisors is an integer number (10711859424).

Almost surely, 2^222200101221 is an apocalyptic number.

222200101221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222200101221 is a deficient number, since it is larger than the sum of its proper divisors (120579400347).

222200101221 is a wasteful number, since it uses less digits than its factorization.

222200101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222761.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222200101221 its reverse (122101002222), we get a palindrome (344301103443).

The spelling of 222200101221 in words is "two hundred twenty-two billion, two hundred million, one hundred one thousand, two hundred twenty-one".