21012422414 has 8 divisors (see below), whose sum is σ = 31568585808. Its totient is φ = 10489560480.

The previous prime is 21012422407. The next prime is 21012422423. The reversal of 21012422414 is 41422421012.

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

It is a super-3 number, since 3×21012422414³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21012422414.

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, 8323787 + ... + 8326310.

It is an arithmetic number, because the mean of its divisors is an integer number (3946073226).

Almost surely, 2^21012422414 is an apocalyptic number.

21012422414 is a deficient number, since it is larger than the sum of its proper divisors (10556163394).

21012422414 is a wasteful number, since it uses less digits than its factorization.

21012422414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16650730.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 21012422414 its reverse (41422421012), we get a palindrome (62434843426).

The spelling of 21012422414 in words is "twenty-one billion, twelve million, four hundred twenty-two thousand, four hundred fourteen".