222121002121201 has 4 divisors (see below), whose sum is σ = 222121181533504. Its totient is φ = 222120822708900.

The previous prime is 222121002121147. The next prime is 222121002121241. The reversal of 222121002121201 is 102121200121222.

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 not a de Polignac number, because 222121002121201 - 2¹³ = 222121002113009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121002121241) 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, 87836085 + ... + 90329506.

It is an arithmetic number, because the mean of its divisors is an integer number (55530295383376).

Almost surely, 2^{222121002121201} is an apocalyptic number.

It is an amenable number.

222121002121201 is a deficient number, since it is larger than the sum of its proper divisors (179412303).

222121002121201 is a wasteful number, since it uses less digits than its factorization.

222121002121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179412302.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222121002121201 its reverse (102121200121222), we get a palindrome (324242202242423).

The spelling of 222121002121201 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two million, one hundred twenty-one thousand, two hundred one".