2222120012221 has 16 divisors (see below), whose sum is σ = 2252384092800. Its totient is φ = 2192067604800.

The previous prime is 2222120012213. The next prime is 2222120012251. The reversal of 2222120012221 is 1222100212222.

It is a cyclic number.

It is not a de Polignac number, because 2222120012221 - 2³ = 2222120012213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222120012201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123353011 + ... + 123371023.

It is an arithmetic number, because the mean of its divisors is an integer number (140774005800).

Almost surely, 2^{2222120012221} is an apocalyptic number.

It is an amenable number.

2222120012221 is a deficient number, since it is larger than the sum of its proper divisors (30264080579).

2222120012221 is a wasteful number, since it uses less digits than its factorization.

2222120012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23796.

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

Adding to 2222120012221 its reverse (1222100212222), we get a palindrome (3444220224443).

The spelling of 2222120012221 in words is "two trillion, two hundred twenty-two billion, one hundred twenty million, twelve thousand, two hundred twenty-one".