21121100010259 has 2 divisors, whose sum is σ = 21121100010260. Its totient is φ = 21121100010258.

The previous prime is 21121100010193. The next prime is 21121100010337. The reversal of 21121100010259 is 95201000112112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21121100010259 - 2³⁹ = 20571344196371 is a prime.

It is a super-2 number, since 2×21121100010259² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21121100310259) by changing a digit.

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 as a sum of consecutive naturals, namely, 10560550005129 + 10560550005130.

It is an arithmetic number, because the mean of its divisors is an integer number (10560550005130).

Almost surely, 2^{21121100010259} is an apocalyptic number.

21121100010259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21121100010259 is an equidigital number, since it uses as much as digits as its factorization.

21121100010259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 25.

The spelling of 21121100010259 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred million, ten thousand, two hundred fifty-nine".