21051113419 has 8 divisors (see below), whose sum is σ = 24092741088. Its totient is φ = 18018067200.

The previous prime is 21051113417. The next prime is 21051113437. The reversal of 21051113419 is 91431115012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21051113419 - 2¹ = 21051113417 is a prime.

It is a super-3 number, since 3×21051113419³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21051113417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140102 + ... + 2149915.

It is an arithmetic number, because the mean of its divisors is an integer number (3011592636).

Almost surely, 2^21051113419 is an apocalyptic number.

21051113419 is a deficient number, since it is larger than the sum of its proper divisors (3041627669).

21051113419 is an equidigital number, since it uses as much as digits as its factorization.

21051113419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290725.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 21051113419 in words is "twenty-one billion, fifty-one million, one hundred thirteen thousand, four hundred nineteen".