21121534414 has 8 divisors (see below), whose sum is σ = 33349791240. Its totient is φ = 10004937336.

The previous prime is 21121534393. The next prime is 21121534459. The reversal of 21121534414 is 41443512112.

It is a happy number.

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

It is a super-2 number, since 2×21121534414² (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, 277914889 + ... + 277914964.

It is an arithmetic number, because the mean of its divisors is an integer number (4168723905).

Almost surely, 2^21121534414 is an apocalyptic number.

21121534414 is a deficient number, since it is larger than the sum of its proper divisors (12228256826).

21121534414 is a wasteful number, since it uses less digits than its factorization.

21121534414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555829874.

The product of its digits is 3840, while the sum is 28.

The spelling of 21121534414 in words is "twenty-one billion, one hundred twenty-one million, five hundred thirty-four thousand, four hundred fourteen".