102021445131420 has 24 divisors (see below), whose sum is σ = 285660046368144. Its totient is φ = 27205718701696.

The previous prime is 102021445131413. The next prime is 102021445131439. The reversal of 102021445131420 is 24131544120201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850178709369 + ... + 850178709488.

It is an arithmetic number, because the mean of its divisors is an integer number (11902501932006).

Almost surely, 2^{102021445131420} is an apocalyptic number.

102021445131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021445131420 is an abundant number, since it is smaller than the sum of its proper divisors (183638601236724).

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

102021445131420 is a wasteful number, since it uses less digits than its factorization.

102021445131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700357418869 (or 1700357418867 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 102021445131420 its reverse (24131544120201), we get a palindrome (126152989251621).

The spelling of 102021445131420 in words is "one hundred two trillion, twenty-one billion, four hundred forty-five million, one hundred thirty-one thousand, four hundred twenty".