201001201212121 has 8 divisors (see below), whose sum is σ = 201061467176544. Its totient is φ = 200940936575520.

The previous prime is 201001201212067. The next prime is 201001201212137. The reversal of 201001201212121 is 121212102100102.

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 201001201212121 - 2⁹ = 201001201211609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201001201212095 and 201001201212104.

It is not an unprimeable number, because it can be changed into a prime (201001201282121) 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, 361097706 + ... + 361653916.

It is an arithmetic number, because the mean of its divisors is an integer number (25132683397068).

Almost surely, 2^{201001201212121} is an apocalyptic number.

It is an amenable number.

201001201212121 is a deficient number, since it is larger than the sum of its proper divisors (60265964423).

201001201212121 is a wasteful number, since it uses less digits than its factorization.

201001201212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663911.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201001201212121 its reverse (121212102100102), we get a palindrome (322213303312223).

The spelling of 201001201212121 in words is "two hundred one trillion, one billion, two hundred one million, two hundred twelve thousand, one hundred twenty-one".