222120021211 has 8 divisors (see below), whose sum is σ = 244162467648. Its totient is φ = 200385861000.

The previous prime is 222120021181. The next prime is 222120021311. The reversal of 222120021211 is 112120021222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222120021211 - 2²¹ = 222117924059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222120021311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77070045 + ... + 77072926.

It is an arithmetic number, because the mean of its divisors is an integer number (30520308456).

Almost surely, 2^222120021211 is an apocalyptic number.

222120021211 is a deficient number, since it is larger than the sum of its proper divisors (22042446437).

222120021211 is a wasteful number, since it uses less digits than its factorization.

222120021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154143113.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222120021211 its reverse (112120021222), we get a palindrome (334240042433).

The spelling of 222120021211 in words is "two hundred twenty-two billion, one hundred twenty million, twenty-one thousand, two hundred eleven".