21503100425002 has 16 divisors (see below), whose sum is σ = 36863680784832. Its totient is φ = 9215308739520.

The previous prime is 21503100424937. The next prime is 21503100425021. The reversal of 21503100425002 is 20052400130512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25040028 + ... + 25884535.

It is an arithmetic number, because the mean of its divisors is an integer number (2303980049052).

Almost surely, 2^{21503100425002} is an apocalyptic number.

21503100425002 is a deficient number, since it is larger than the sum of its proper divisors (15360580359830).

21503100425002 is a wasteful number, since it uses less digits than its factorization.

21503100425002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50954733.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 21503100425002 its reverse (20052400130512), we get a palindrome (41555500555514).

The spelling of 21503100425002 in words is "twenty-one trillion, five hundred three billion, one hundred million, four hundred twenty-five thousand, two".