201212202121001 has 16 divisors (see below), whose sum is σ = 203019926984448. Its totient is φ = 199412502912000.

The previous prime is 201212202120991. The next prime is 201212202121013. The reversal of 201212202121001 is 100121202212102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201212202121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201212202121061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581279426 + ... + 581625476.

It is an arithmetic number, because the mean of its divisors is an integer number (12688745436528).

Almost surely, 2^{201212202121001} is an apocalyptic number.

It is an amenable number.

201212202121001 is a deficient number, since it is larger than the sum of its proper divisors (1807724863447).

201212202121001 is a wasteful number, since it uses less digits than its factorization.

201212202121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357632.

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

Adding to 201212202121001 its reverse (100121202212102), we get a palindrome (301333404333103).

The spelling of 201212202121001 in words is "two hundred one trillion, two hundred twelve billion, two hundred two million, one hundred twenty-one thousand, one".