111021222212001 has 32 divisors (see below), whose sum is σ = 167412267724800. Its totient is φ = 72704316182400.

The previous prime is 111021222211997. The next prime is 111021222212003. The reversal of 111021222212001 is 100212222120111.

111021222212001 is a `hidden beast` number, since 1 + 110 + 212 + 222 + 120 + 0 + 1 = 666.

It is not a de Polignac number, because 111021222212001 - 2² = 111021222211997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111021222212003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159936556 + ... + 160629213.

It is an arithmetic number, because the mean of its divisors is an integer number (5231633366400).

Almost surely, 2^{111021222212001} is an apocalyptic number.

It is an amenable number.

111021222212001 is a deficient number, since it is larger than the sum of its proper divisors (56391045512799).

111021222212001 is a wasteful number, since it uses less digits than its factorization.

111021222212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320566006 (or 320566000 counting only the distinct ones).

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

Adding to 111021222212001 its reverse (100212222120111), we get a palindrome (211233444332112).

The spelling of 111021222212001 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, one".