20213230123140 has 48 divisors (see below), whose sum is σ = 56597622504192. Its totient is φ = 5390139636736.

The previous prime is 20213230123109. The next prime is 20213230123147. The reversal of 20213230123140 is 4132103231202.

It is a super-2 number, since 2×20213230123140² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20213230123140.

It is not an unprimeable number, because it can be changed into a prime (20213230123147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4380532 + ... + 7721108.

It is an arithmetic number, because the mean of its divisors is an integer number (1179117135504).

Almost surely, 2^{20213230123140} is an apocalyptic number.

20213230123140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213230123140 is an abundant number, since it is smaller than the sum of its proper divisors (36384392381052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20213230123140 is a wasteful number, since it uses less digits than its factorization.

20213230123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441436 (or 3441434 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20213230123140 its reverse (4132103231202), we get a palindrome (24345333354342).

The spelling of 20213230123140 in words is "twenty trillion, two hundred thirteen billion, two hundred thirty million, one hundred twenty-three thousand, one hundred forty".