201002212121 has 8 divisors (see below), whose sum is σ = 203561635200. Its totient is φ = 198443166480.

The previous prime is 201002212043. The next prime is 201002212123. The reversal of 201002212121 is 121212200102.

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 201002212121 - 2³⁴ = 183822342937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002212096 and 201002212105.

It is not an unprimeable number, because it can be changed into a prime (201002212123) 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, 1068050 + ... + 1242068.

It is an arithmetic number, because the mean of its divisors is an integer number (25445204400).

Almost surely, 2^201002212121 is an apocalyptic number.

It is an amenable number.

201002212121 is a deficient number, since it is larger than the sum of its proper divisors (2559423079).

201002212121 is a wasteful number, since it uses less digits than its factorization.

201002212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188719.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201002212121 its reverse (121212200102), we get a palindrome (322214412223).

The spelling of 201002212121 in words is "two hundred one billion, two million, two hundred twelve thousand, one hundred twenty-one".