21301255420203 has 32 divisors (see below), whose sum is σ = 30996789672960. Its totient is φ = 12904375760640.

The previous prime is 21301255420171. The next prime is 21301255420229. The reversal of 21301255420203 is 30202455210312.

It is not a de Polignac number, because 21301255420203 - 2⁵ = 21301255420171 is a prime.

It is a super-2 number, since 2×21301255420203² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21301255420243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1172386503 + ... + 1172404671.

It is an arithmetic number, because the mean of its divisors is an integer number (968649677280).

Almost surely, 2^{21301255420203} is an apocalyptic number.

21301255420203 is a deficient number, since it is larger than the sum of its proper divisors (9695534252757).

21301255420203 is a wasteful number, since it uses less digits than its factorization.

21301255420203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31299.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 21301255420203 in words is "twenty-one trillion, three hundred one billion, two hundred fifty-five million, four hundred twenty thousand, two hundred three".