21024034551042 has 16 divisors (see below), whose sum is σ = 42048809117280. Its totient is φ = 7007888181152.

The previous prime is 21024034551029. The next prime is 21024034551071. The reversal of 21024034551042 is 24015543042012.

It is a junction number, because it is equal to n+sod(n) for n = 21024034550994 and 21024034551012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30464292 + ... + 31146767.

It is an arithmetic number, because the mean of its divisors is an integer number (2628050569830).

Almost surely, 2^{21024034551042} is an apocalyptic number.

21024034551042 is an abundant number, since it is smaller than the sum of its proper divisors (21024774566238).

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

21024034551042 is a wasteful number, since it uses less digits than its factorization.

21024034551042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61667937.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 21024034551042 its reverse (24015543042012), we get a palindrome (45039577593054).

The spelling of 21024034551042 in words is "twenty-one trillion, twenty-four billion, thirty-four million, five hundred fifty-one thousand, forty-two".