222120221001 has 32 divisors (see below), whose sum is σ = 358977484800. Its totient is φ = 119260068096.

The previous prime is 222120220981. The next prime is 222120221017. The reversal of 222120221001 is 100122021222.

It is not a de Polignac number, because 222120221001 - 2⁷ = 222120220873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222120221801) 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, 305511 + ... + 733196.

It is an arithmetic number, because the mean of its divisors is an integer number (11218046400).

Almost surely, 2^222120221001 is an apocalyptic number.

222120221001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222120221001 is a deficient number, since it is larger than the sum of its proper divisors (136857263799).

222120221001 is a wasteful number, since it uses less digits than its factorization.

222120221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039333.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222120221001 its reverse (100122021222), we get a palindrome (322242242223).

The spelling of 222120221001 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, one".