10021520055 has 16 divisors (see below), whose sum is σ = 16036945920. Its totient is φ = 5343972768.

The previous prime is 10021520029. The next prime is 10021520083. The reversal of 10021520055 is 55002512001.

It is not a de Polignac number, because 10021520055 - 2¹⁶ = 10021454519 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53386 + ... + 151304.

It is an arithmetic number, because the mean of its divisors is an integer number (1002309120).

Almost surely, 2^10021520055 is an apocalyptic number.

10021520055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10021520055 is a deficient number, since it is larger than the sum of its proper divisors (6015425865).

10021520055 is an equidigital number, since it uses as much as digits as its factorization.

10021520055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104750.

The product of its (nonzero) digits is 500, while the sum is 21.

The spelling of 10021520055 in words is "ten billion, twenty-one million, five hundred twenty thousand, fifty-five".