20142124401021 has 16 divisors (see below), whose sum is σ = 30694888316928. Its totient is φ = 11508987625200.

The previous prime is 20142124401019. The next prime is 20142124401079. The reversal of 20142124401021 is 12010442124102.

It is a happy number.

It is not a de Polignac number, because 20142124401021 - 2¹ = 20142124401019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20142124400982 and 20142124401000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142124401521) 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, 32929185 + ... + 33535286.

It is an arithmetic number, because the mean of its divisors is an integer number (1918430519808).

Almost surely, 2^{20142124401021} is an apocalyptic number.

20142124401021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20142124401021 is a deficient number, since it is larger than the sum of its proper divisors (10552763915907).

20142124401021 is a wasteful number, since it uses less digits than its factorization.

20142124401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66478912.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 20142124401021 its reverse (12010442124102), we get a palindrome (32152566525123).

The spelling of 20142124401021 in words is "twenty trillion, one hundred forty-two billion, one hundred twenty-four million, four hundred one thousand, twenty-one".