2222022001221 has 48 divisors (see below), whose sum is σ = 3654319174272. Its totient is φ = 1287875635200.

The previous prime is 2222022001183. The next prime is 2222022001229. The reversal of 2222022001221 is 1221002202222.

2222022001221 is a `hidden beast` number, since 2 + 2 + 220 + 220 + 0 + 1 + 221 = 666.

It is not a de Polignac number, because 2222022001221 - 2¹¹ = 2222021999173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222022001194 and 2222022001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222022001229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11822301 + ... + 12008781.

It is an arithmetic number, because the mean of its divisors is an integer number (76131649464).

Almost surely, 2^{2222022001221} is an apocalyptic number.

It is an amenable number.

2222022001221 is a deficient number, since it is larger than the sum of its proper divisors (1432297173051).

2222022001221 is a wasteful number, since it uses less digits than its factorization.

2222022001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191754 (or 191751 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2222022001221 its reverse (1221002202222), we get a palindrome (3443024203443).

The spelling of 2222022001221 in words is "two trillion, two hundred twenty-two billion, twenty-two million, one thousand, two hundred twenty-one".