212012221210001 has 8 divisors (see below), whose sum is σ = 212955196063080. Its totient is φ = 211069395551232.

The previous prime is 212012221209973. The next prime is 212012221210039. The reversal of 212012221210001 is 100012122210212.

It can be written as a sum of positive squares in 4 ways, for example, as 129845683150225 + 82166538059776 = 11394985^2 + 9064576^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212012221210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012221218001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34449680 + ... + 40134833.

It is an arithmetic number, because the mean of its divisors is an integer number (26619399507885).

Almost surely, 2^{212012221210001} is an apocalyptic number.

It is an amenable number.

212012221210001 is a deficient number, since it is larger than the sum of its proper divisors (942974853079).

212012221210001 is a wasteful number, since it uses less digits than its factorization.

212012221210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74597155.

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

Adding to 212012221210001 its reverse (100012122210212), we get a palindrome (312024343420213).

The spelling of 212012221210001 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, two hundred ten thousand, one".