222112100202021 has 24 divisors (see below), whose sum is σ = 323114988811680. Its totient is φ = 147022005748896.

The previous prime is 222112100201863. The next prime is 222112100202023. The reversal of 222112100202021 is 120202001211222.

It is a happy number.

222112100202021 is a `hidden beast` number, since 22 + 211 + 210 + 0 + 20 + 202 + 1 = 666.

It is not a de Polignac number, because 222112100202021 - 2¹³ = 222112100193829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222112100201985 and 222112100202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112100202023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104516311 + ... + 106620276.

It is an arithmetic number, because the mean of its divisors is an integer number (13463124533820).

Almost surely, 2^{222112100202021} is an apocalyptic number.

It is an amenable number.

222112100202021 is a deficient number, since it is larger than the sum of its proper divisors (101002888609659).

222112100202021 is a wasteful number, since it uses less digits than its factorization.

222112100202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211137425 (or 211137422 counting only the distinct ones).

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

Adding to 222112100202021 its reverse (120202001211222), we get a palindrome (342314101413243).

The spelling of 222112100202021 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred million, two hundred two thousand, twenty-one".