20231030121 has 16 divisors (see below), whose sum is σ = 28398642240. Its totient is φ = 12775596480.

The previous prime is 20231030117. The next prime is 20231030143. The reversal of 20231030121 is 12103013202.

It is not a de Polignac number, because 20231030121 - 2² = 20231030117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20231030121.

It is not an unprimeable number, because it can be changed into a prime (20231030101) 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, 429811 + ... + 474551.

It is an arithmetic number, because the mean of its divisors is an integer number (1774915140).

Almost surely, 2^20231030121 is an apocalyptic number.

It is an amenable number.

20231030121 is a deficient number, since it is larger than the sum of its proper divisors (8167612119).

20231030121 is a wasteful number, since it uses less digits than its factorization.

20231030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52696.

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

Adding to 20231030121 its reverse (12103013202), we get a palindrome (32334043323).

The spelling of 20231030121 in words is "twenty billion, two hundred thirty-one million, thirty thousand, one hundred twenty-one".