21145011414 has 8 divisors (see below), whose sum is σ = 42290022840. Its totient is φ = 7048337136.

The previous prime is 21145011409. The next prime is 21145011439. The reversal of 21145011414 is 41411054112.

It is a happy number.

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

21145011414 is an admirable number.

It is a super-2 number, since 2×21145011414² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762084279 + ... + 1762084290.

It is an arithmetic number, because the mean of its divisors is an integer number (5286252855).

Almost surely, 2^21145011414 is an apocalyptic number.

21145011414 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21145011414 is a wasteful number, since it uses less digits than its factorization.

21145011414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524168574.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 21145011414 its reverse (41411054112), we get a palindrome (62556065526).

The spelling of 21145011414 in words is "twenty-one billion, one hundred forty-five million, eleven thousand, four hundred fourteen".