20212130142440 has 32 divisors (see below), whose sum is σ = 45523556686080. Its totient is φ = 8076627369792.

The previous prime is 20212130142431. The next prime is 20212130142443. The reversal of 20212130142440 is 4424103121202.

It is a super-2 number, since 2×20212130142440² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20212130142443) 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 7 ways as a sum of consecutive naturals, for example, 256981664 + ... + 257060303.

It is an arithmetic number, because the mean of its divisors is an integer number (1422611146440).

Almost surely, 2^{20212130142440} is an apocalyptic number.

20212130142440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212130142440 is an abundant number, since it is smaller than the sum of its proper divisors (25311426543640).

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

20212130142440 is a wasteful number, since it uses less digits than its factorization.

20212130142440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514042961 (or 514042957 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20212130142440 its reverse (4424103121202), we get a palindrome (24636233263642).

The spelling of 20212130142440 in words is "twenty trillion, two hundred twelve billion, one hundred thirty million, one hundred forty-two thousand, four hundred forty".