21122740763 has 4 divisors (see below), whose sum is σ = 21123033120. Its totient is φ = 21122448408.

The previous prime is 21122740757. The next prime is 21122740777. The reversal of 21122740763 is 36704722112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21122740763 - 2⁶ = 21122740699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122740753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49598 + ... + 211436.

It is an arithmetic number, because the mean of its divisors is an integer number (5280758280).

Almost surely, 2^21122740763 is an apocalyptic number.

21122740763 is a deficient number, since it is larger than the sum of its proper divisors (292357).

21122740763 is a wasteful number, since it uses less digits than its factorization.

21122740763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292356.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 21122740763 in words is "twenty-one billion, one hundred twenty-two million, seven hundred forty thousand, seven hundred sixty-three".