222212121101001 has 24 divisors (see below), whose sum is σ = 328989089879424. Its totient is φ = 144485493213600.

The previous prime is 222212121100999. The next prime is 222212121101011. The reversal of 222212121101001 is 100101121212222.

222212121101001 is a `hidden beast` number, since 22 + 221 + 212 + 110 + 100 + 1 = 666.

It is not a de Polignac number, because 222212121101001 - 2¹ = 222212121100999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222212121101011) 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, 1824250881 + ... + 1824372686.

It is an arithmetic number, because the mean of its divisors is an integer number (13707878744976).

Almost surely, 2^{222212121101001} is an apocalyptic number.

It is an amenable number.

222212121101001 is a deficient number, since it is larger than the sum of its proper divisors (106776968778423).

222212121101001 is a wasteful number, since it uses less digits than its factorization.

222212121101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648623741 (or 3648623738 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222212121101001 its reverse (100101121212222), we get a palindrome (322313242313223).

The spelling of 222212121101001 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred twenty-one million, one hundred one thousand, one".