20230121121213 has 16 divisors (see below), whose sum is σ = 28502537195520. Its totient is φ = 12737071302384.

The previous prime is 20230121121173. The next prime is 20230121121247. The reversal of 20230121121213 is 31212112103202.

It is not a de Polignac number, because 20230121121213 - 2¹³ = 20230121113021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20230121121213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230121121013) 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, 1855628481 + ... + 1855639382.

It is an arithmetic number, because the mean of its divisors is an integer number (1781408574720).

Almost surely, 2^{20230121121213} is an apocalyptic number.

20230121121213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20230121121213 is a deficient number, since it is larger than the sum of its proper divisors (8272416074307).

20230121121213 is a wasteful number, since it uses less digits than its factorization.

20230121121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711267968.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20230121121213 its reverse (31212112103202), we get a palindrome (51442233224415).

The spelling of 20230121121213 in words is "twenty trillion, two hundred thirty billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred thirteen".