30000202002121 has 4 divisors (see below), whose sum is σ = 32307909848452. Its totient is φ = 27692494155792.

The previous prime is 30000202002107. The next prime is 30000202002149. The reversal of 30000202002121 is 12120020200003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18131109028096 + 11869092974025 = 4258064^2 + 3445155^2 .

It is a cyclic number.

It is not a de Polignac number, because 30000202002121 - 2¹¹ = 30000202000073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 2307707846317 = 30000202002121 / (3 + 0 + 0 + 0 + 0 + 2 + 0 + 2 + 0 + 0 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30000202002151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153853923146 + ... + 1153853923171.

It is an arithmetic number, because the mean of its divisors is an integer number (8076977462113).

Almost surely, 2^{30000202002121} is an apocalyptic number.

It is an amenable number.

30000202002121 is a deficient number, since it is larger than the sum of its proper divisors (2307707846331).

30000202002121 is a wasteful number, since it uses less digits than its factorization.

30000202002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307707846330.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 30000202002121 its reverse (12120020200003), we get a palindrome (42120222202124).

The spelling of 30000202002121 in words is "thirty trillion, two hundred two million, two thousand, one hundred twenty-one".