21010430019 has 16 divisors (see below), whose sum is σ = 28489882880. Its totient is φ = 13769235360.

The previous prime is 21010430009. The next prime is 21010430059. The reversal of 21010430019 is 91003401012.

It is not a de Polignac number, because 21010430019 - 2¹³ = 21010421827 is a prime.

It is a super-2 number, since 2×21010430019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010429977 and 21010430004.

It is not an unprimeable number, because it can be changed into a prime (21010430009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286842 + ... + 352560.

It is an arithmetic number, because the mean of its divisors is an integer number (1780617680).

Almost surely, 2^21010430019 is an apocalyptic number.

21010430019 is a deficient number, since it is larger than the sum of its proper divisors (7479452861).

21010430019 is a wasteful number, since it uses less digits than its factorization.

21010430019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67530.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 21010430019 in words is "twenty-one billion, ten million, four hundred thirty thousand, nineteen".