201201012121 has 8 divisors (see below), whose sum is σ = 202071600000. Its totient is φ = 200330664240.

The previous prime is 201201012097. The next prime is 201201012167. The reversal of 201201012121 is 121210102102.

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 201201012121 - 2²⁷ = 201066794393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201201012821) 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, 1736131 + ... + 1848391.

It is an arithmetic number, because the mean of its divisors is an integer number (25258950000).

Almost surely, 2^201201012121 is an apocalyptic number.

It is an amenable number.

201201012121 is a deficient number, since it is larger than the sum of its proper divisors (870587879).

201201012121 is a wasteful number, since it uses less digits than its factorization.

201201012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119999.

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

Adding to 201201012121 its reverse (121210102102), we get a palindrome (322411114223).

The spelling of 201201012121 in words is "two hundred one billion, two hundred one million, twelve thousand, one hundred twenty-one".