222100201012021 has 16 divisors (see below), whose sum is σ = 230185219179520. Its totient is φ = 214074410941440.

The previous prime is 222100201012007. The next prime is 222100201012037. The reversal of 222100201012021 is 120210102001222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222100201012021 - 2⁵ = 222100201011989 is a prime.

It is a super-3 number, since 3×222100201012021³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222100201011986 and 222100201012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100201012051) 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, 6289806 + ... + 21994591.

It is an arithmetic number, because the mean of its divisors is an integer number (14386576198720).

Almost surely, 2^{222100201012021} is an apocalyptic number.

It is an amenable number.

222100201012021 is a deficient number, since it is larger than the sum of its proper divisors (8085018167499).

222100201012021 is a wasteful number, since it uses less digits than its factorization.

222100201012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28285444.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222100201012021 its reverse (120210102001222), we get a palindrome (342310303013243).

The spelling of 222100201012021 in words is "two hundred twenty-two trillion, one hundred billion, two hundred one million, twelve thousand, twenty-one".