22212121100201 has 4 divisors (see below), whose sum is σ = 22427772761472. Its totient is φ = 21996469438932.

The previous prime is 22212121100177. The next prime is 22212121100231. The reversal of 22212121100201 is 10200112121222.

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 22212121100201 - 2³⁴ = 22194941231017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22212121100201.

It is not an unprimeable number, because it can be changed into a prime (22212121100231) 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, 107825830481 + ... + 107825830686.

It is an arithmetic number, because the mean of its divisors is an integer number (5606943190368).

Almost surely, 2^{22212121100201} is an apocalyptic number.

It is an amenable number.

22212121100201 is a deficient number, since it is larger than the sum of its proper divisors (215651661271).

22212121100201 is a wasteful number, since it uses less digits than its factorization.

22212121100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215651661270.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22212121100201 its reverse (10200112121222), we get a palindrome (32412233221423).

The spelling of 22212121100201 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-one million, one hundred thousand, two hundred one".