30231200121 has 16 divisors (see below), whose sum is σ = 40915630080. Its totient is φ = 19851002640.

The previous prime is 30231200119. The next prime is 30231200149. The reversal of 30231200121 is 12100213203.

It is not a de Polignac number, because 30231200121 - 2¹ = 30231200119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30231200121.

It is not an unprimeable number, because it can be changed into a prime (30231200171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153006 + ... + 289608.

It is an arithmetic number, because the mean of its divisors is an integer number (2557226880).

Almost surely, 2^30231200121 is an apocalyptic number.

It is an amenable number.

30231200121 is a deficient number, since it is larger than the sum of its proper divisors (10684429959).

30231200121 is a wasteful number, since it uses less digits than its factorization.

30231200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137716.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30231200121 its reverse (12100213203), we get a palindrome (42331413324).

The spelling of 30231200121 in words is "thirty billion, two hundred thirty-one million, two hundred thousand, one hundred twenty-one".