2220012100221 has 32 divisors (see below), whose sum is σ = 3176992697088. Its totient is φ = 1375313955840.

The previous prime is 2220012100213. The next prime is 2220012100237. The reversal of 2220012100221 is 1220012100222.

It is not a de Polignac number, because 2220012100221 - 2³ = 2220012100213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220012100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220012100291) 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, 1029765 + ... + 2345301.

It is an arithmetic number, because the mean of its divisors is an integer number (99281021784).

Almost surely, 2^{2220012100221} is an apocalyptic number.

It is an amenable number.

2220012100221 is a deficient number, since it is larger than the sum of its proper divisors (956980596867).

2220012100221 is a wasteful number, since it uses less digits than its factorization.

2220012100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316261.

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

Adding to 2220012100221 its reverse (1220012100222), we get a palindrome (3440024200443).

Subtracting from 2220012100221 its reverse (1220012100222), we obtain a palindrome (999999999999).

The spelling of 2220012100221 in words is "two trillion, two hundred twenty billion, twelve million, one hundred thousand, two hundred twenty-one".