21125071514 has 8 divisors (see below), whose sum is σ = 31707680160. Its totient is φ = 10555844796.

The previous prime is 21125071507. The next prime is 21125071537. The reversal of 21125071514 is 41517052112.

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

It is a super-2 number, since 2×21125071514² (a number of 21 digits) contains 22 as substring.

It is a Curzon 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, 3341534 + ... + 3347849.

It is an arithmetic number, because the mean of its divisors is an integer number (3963460020).

Almost surely, 2^21125071514 is an apocalyptic number.

21125071514 is a deficient number, since it is larger than the sum of its proper divisors (10582608646).

21125071514 is a wasteful number, since it uses less digits than its factorization.

21125071514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690964.

The product of its (nonzero) digits is 2800, while the sum is 29.

The spelling of 21125071514 in words is "twenty-one billion, one hundred twenty-five million, seventy-one thousand, five hundred fourteen".