222201212102021 has 16 divisors (see below), whose sum is σ = 237136811433984. Its totient is φ = 207473000603904.

The previous prime is 222201212101933. The next prime is 222201212102027. The reversal of 222201212102021 is 120201212102222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222201212102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222201212101984 and 222201212102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201212102027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38733551 + ... + 44098643.

It is an arithmetic number, because the mean of its divisors is an integer number (14821050714624).

Almost surely, 2^{222201212102021} is an apocalyptic number.

It is an amenable number.

222201212102021 is a deficient number, since it is larger than the sum of its proper divisors (14935599331963).

222201212102021 is a wasteful number, since it uses less digits than its factorization.

222201212102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384420.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222201212102021 its reverse (120201212102222), we get a palindrome (342402424204243).

The spelling of 222201212102021 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twelve million, one hundred two thousand, twenty-one".