222111212001 has 16 divisors (see below), whose sum is σ = 338593572864. Its totient is φ = 126868795344.

The previous prime is 222111211997. The next prime is 222111212093. The reversal of 222111212001 is 100212111222.

It is not a de Polignac number, because 222111212001 - 2² = 222111211997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222111212801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2109775 + ... + 2212548.

It is an arithmetic number, because the mean of its divisors is an integer number (21162098304).

Almost surely, 2^222111212001 is an apocalyptic number.

222111212001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222111212001 is a deficient number, since it is larger than the sum of its proper divisors (116482360863).

222111212001 is a wasteful number, since it uses less digits than its factorization.

222111212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324780.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222111212001 its reverse (100212111222), we get a palindrome (322323323223).

The spelling of 222111212001 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred twelve thousand, one".