2222120022021 has 12 divisors (see below), whose sum is σ = 3210341883372. Its totient is φ = 1481130442176.

The previous prime is 2222120021981. The next prime is 2222120022077. The reversal of 2222120022021 is 1202200212222.

2222120022021 is a `hidden beast` number, since 2 + 2 + 221 + 200 + 220 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2095820813025 + 126299208996 = 1447695^2 + 355386^2 .

It is not a de Polignac number, because 2222120022021 - 2¹⁹ = 2222119497733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222120021985 and 2222120022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222120022821) 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, 23525736 + ... + 23620001.

It is an arithmetic number, because the mean of its divisors is an integer number (267528490281).

Almost surely, 2^{2222120022021} is an apocalyptic number.

It is an amenable number.

2222120022021 is a deficient number, since it is larger than the sum of its proper divisors (988221861351).

2222120022021 is a wasteful number, since it uses less digits than its factorization.

2222120022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47150980 (or 47150977 counting only the distinct ones).

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

Adding to 2222120022021 its reverse (1202200212222), we get a palindrome (3424320234243).

The spelling of 2222120022021 in words is "two trillion, two hundred twenty-two billion, one hundred twenty million, twenty-two thousand, twenty-one".