222100220001021 has 16 divisors (see below), whose sum is σ = 296190512220288. Its totient is φ = 148038371712000.

The previous prime is 222100220001007. The next prime is 222100220001067. The reversal of 222100220001021 is 120100022001222.

It is not a de Polignac number, because 222100220001021 - 2¹⁰ = 222100219999997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100220001721) 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, 976447176 + ... + 976674606.

It is an arithmetic number, because the mean of its divisors is an integer number (18511907013768).

Almost surely, 2^{222100220001021} is an apocalyptic number.

It is an amenable number.

222100220001021 is a deficient number, since it is larger than the sum of its proper divisors (74090292219267).

222100220001021 is a wasteful number, since it uses less digits than its factorization.

222100220001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288532.

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

Adding to 222100220001021 its reverse (120100022001222), we get a palindrome (342200242002243).

The spelling of 222100220001021 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty million, one thousand, twenty-one".