201321002121 has 8 divisors (see below), whose sum is σ = 268797232704. Its totient is φ = 134029386480.

The previous prime is 201321002039. The next prime is 201321002143. The reversal of 201321002121 is 121200123102.

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

It is not a de Polignac number, because 201321002121 - 2²⁵ = 201287447689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201321002121.

It is not an unprimeable number, because it can be changed into a prime (201321002021) 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, 46151190 + ... + 46155551.

It is an arithmetic number, because the mean of its divisors is an integer number (33599654088).

Almost surely, 2^201321002121 is an apocalyptic number.

It is an amenable number.

201321002121 is a deficient number, since it is larger than the sum of its proper divisors (67476230583).

201321002121 is an equidigital number, since it uses as much as digits as its factorization.

201321002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92307471.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201321002121 its reverse (121200123102), we get a palindrome (322521125223).

The spelling of 201321002121 in words is "two hundred one billion, three hundred twenty-one million, two thousand, one hundred twenty-one".