21425144152412 has 48 divisors (see below), whose sum is σ = 50341597458432. Its totient is φ = 7705346546880.

The previous prime is 21425144152369. The next prime is 21425144152439.

21425144152412 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2675463548 + ... + 2675471555.

It is an arithmetic number, because the mean of its divisors is an integer number (1048783280384).

Almost surely, 2^{21425144152412} is an apocalyptic number.

21425144152412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21425144152412 is an abundant number, since it is smaller than the sum of its proper divisors (28916453306020).

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

21425144152412 is a wasteful number, since it uses less digits than its factorization.

21425144152412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350935138 (or 5350935136 counting only the distinct ones).

The product of its digits is 102400, while the sum is 38.

It can be divided in two parts, 2142514 and 4152412, that added together give a palindrome (6294926).

The spelling of 21425144152412 in words is "twenty-one trillion, four hundred twenty-five billion, one hundred forty-four million, one hundred fifty-two thousand, four hundred twelve".