222121100020213 has 4 divisors (see below), whose sum is σ = 222121331279680. Its totient is φ = 222120868760748.

The previous prime is 222121100020201. The next prime is 222121100020243. The reversal of 222121100020213 is 312020001121222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222121100020213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121100020243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114182973 + ... + 116111986.

It is an arithmetic number, because the mean of its divisors is an integer number (55530332819920).

Almost surely, 2^{222121100020213} is an apocalyptic number.

It is an amenable number.

222121100020213 is a deficient number, since it is larger than the sum of its proper divisors (231259467).

222121100020213 is an equidigital number, since it uses as much as digits as its factorization.

222121100020213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231259466.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222121100020213 its reverse (312020001121222), we get a palindrome (534141101141435).

The spelling of 222121100020213 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred million, twenty thousand, two hundred thirteen".