21073117622 has 4 divisors (see below), whose sum is σ = 31609676436. Its totient is φ = 10536558810.

The previous prime is 21073117621. The next prime is 21073117633. The reversal of 21073117622 is 22671137012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21073117621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5268279404 + ... + 5268279407.

It is an arithmetic number, because the mean of its divisors is an integer number (7902419109).

Almost surely, 2^21073117622 is an apocalyptic number.

21073117622 is a deficient number, since it is larger than the sum of its proper divisors (10536558814).

21073117622 is a wasteful number, since it uses less digits than its factorization.

21073117622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536558813.

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 21073117622 in words is "twenty-one billion, seventy-three million, one hundred seventeen thousand, six hundred twenty-two".