222120221021001 has 12 divisors (see below), whose sum is σ = 327666709024512. Its totient is φ = 144929505914136.

The previous prime is 222120221020993. The next prime is 222120221021003. The reversal of 222120221021001 is 100120122021222.

It is a happy number.

222120221021001 is a `hidden beast` number, since 2 + 221 + 20 + 2 + 210 + 210 + 0 + 1 = 666.

It is not a de Polignac number, because 222120221021001 - 2³ = 222120221020993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222120221021003) 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, 262553452321 + ... + 262553453166.

It is an arithmetic number, because the mean of its divisors is an integer number (27305559085376).

Almost surely, 2^{222120221021001} is an apocalyptic number.

It is an amenable number.

222120221021001 is a deficient number, since it is larger than the sum of its proper divisors (105546488003511).

222120221021001 is a wasteful number, since it uses less digits than its factorization.

222120221021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525106905540 (or 525106905537 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222120221021001 its reverse (100120122021222), we get a palindrome (322240343042223).

The spelling of 222120221021001 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, twenty-one thousand, one".