20230311121021 has 32 divisors (see below), whose sum is σ = 21246273914112. Its totient is φ = 19243993950720.

The previous prime is 20230311120913. The next prime is 20230311121037. The reversal of 20230311121021 is 12012111303202.

It is a de Polignac number, because none of the positive numbers 2^k-20230311121021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20230311121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230311121051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340794675 + ... + 340854031.

It is an arithmetic number, because the mean of its divisors is an integer number (663946059816).

Almost surely, 2^{20230311121021} is an apocalyptic number.

It is an amenable number.

20230311121021 is a deficient number, since it is larger than the sum of its proper divisors (1015962793091).

20230311121021 is a wasteful number, since it uses less digits than its factorization.

20230311121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60549.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20230311121021 its reverse (12012111303202), we get a palindrome (32242422424223).

The spelling of 20230311121021 in words is "twenty trillion, two hundred thirty billion, three hundred eleven million, one hundred twenty-one thousand, twenty-one".