212122222002001 has 4 divisors (see below), whose sum is σ = 215717513900400. Its totient is φ = 208526930103604.

The previous prime is 212122222001983. The next prime is 212122222002073. The reversal of 212122222002001 is 100200222221212.

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 212122222002001 - 2⁵ = 212122222001969 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 212122222002001.

It is not an unprimeable number, because it can be changed into a prime (212122222002091) 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, 1797645949111 + ... + 1797645949228.

It is an arithmetic number, because the mean of its divisors is an integer number (53929378475100).

Almost surely, 2^{212122222002001} is an apocalyptic number.

It is an amenable number.

212122222002001 is a deficient number, since it is larger than the sum of its proper divisors (3595291898399).

212122222002001 is an equidigital number, since it uses as much as digits as its factorization.

212122222002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595291898398.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212122222002001 its reverse (100200222221212), we get a palindrome (312322444223213).

The spelling of 212122222002001 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two thousand, one".