212000220001001 has 4 divisors (see below), whose sum is σ = 212018090721792. Its totient is φ = 211982349280212.

The previous prime is 212000220000971. The next prime is 212000220001079. The reversal of 212000220001001 is 100100022000212.

It is a happy number.

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 212000220001001 - 2²⁶ = 212000152892137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212000220001081) 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, 8935342601 + ... + 8935366326.

It is an arithmetic number, because the mean of its divisors is an integer number (53004522680448).

Almost surely, 2^{212000220001001} is an apocalyptic number.

It is an amenable number.

212000220001001 is a deficient number, since it is larger than the sum of its proper divisors (17870720791).

212000220001001 is a wasteful number, since it uses less digits than its factorization.

212000220001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17870720790.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212000220001001 its reverse (100100022000212), we get a palindrome (312100242001213).

The spelling of 212000220001001 in words is "two hundred twelve trillion, two hundred twenty million, one thousand, one".