21122413707 has 8 divisors (see below), whose sum is σ = 28163909520. Its totient is φ = 14081263520.

The previous prime is 21122413681. The next prime is 21122413723. The reversal of 21122413707 is 70731422112.

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

It is a cyclic number.

It is not a de Polignac number, because 21122413707 - 2⁶ = 21122413643 is a prime.

It is a super-2 number, since 2×21122413707² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122413727) 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, 143857 + ... + 250877.

It is an arithmetic number, because the mean of its divisors is an integer number (3520488690).

Almost surely, 2^21122413707 is an apocalyptic number.

21122413707 is a deficient number, since it is larger than the sum of its proper divisors (7041495813).

21122413707 is a wasteful number, since it uses less digits than its factorization.

21122413707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172813.

The product of its (nonzero) digits is 4704, while the sum is 30.

Adding to 21122413707 its reverse (70731422112), we get a palindrome (91853835819).

The spelling of 21122413707 in words is "twenty-one billion, one hundred twenty-two million, four hundred thirteen thousand, seven hundred seven".