201220121010001 has 8 divisors (see below), whose sum is σ = 205900144243904. Its totient is φ = 196540119846000.

The previous prime is 201220121009989. The next prime is 201220121010011. The reversal of 201220121010001 is 100010121022102.

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

It is a cyclic number.

It is not a de Polignac number, because 201220121010001 - 2⁹ = 201220121009489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201220121010011) 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, 13698715 + ... + 24291871.

It is an arithmetic number, because the mean of its divisors is an integer number (25737518030488).

Almost surely, 2^{201220121010001} is an apocalyptic number.

It is an amenable number.

201220121010001 is a deficient number, since it is larger than the sum of its proper divisors (4680023233903).

201220121010001 is a wasteful number, since it uses less digits than its factorization.

201220121010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11034951.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201220121010001 its reverse (100010121022102), we get a palindrome (301230242032103).

The spelling of 201220121010001 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty-one million, ten thousand, one".