222100112002021 has 16 divisors (see below), whose sum is σ = 244746350856000. Its totient is φ = 199864014624000.

The previous prime is 222100112001923. The next prime is 222100112002051. The reversal of 222100112002021 is 120200211001222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222100112002021 - 2¹³ = 222100111993829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222100112001986 and 222100112002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100112002051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18215796 + ... + 27857053.

It is an arithmetic number, because the mean of its divisors is an integer number (15296646928500).

Almost surely, 2^{222100112002021} is an apocalyptic number.

It is an amenable number.

222100112002021 is a deficient number, since it is larger than the sum of its proper divisors (22646238853979).

222100112002021 is a wasteful number, since it uses less digits than its factorization.

222100112002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46077300.

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

Adding to 222100112002021 its reverse (120200211001222), we get a palindrome (342300323003243).

The spelling of 222100112002021 in words is "two hundred twenty-two trillion, one hundred billion, one hundred twelve million, two thousand, twenty-one".