22021999977 has 8 divisors (see below), whose sum is σ = 29987404416. Its totient is φ = 14368964432.

The previous prime is 22021999963. The next prime is 22022000017. The reversal of 22021999977 is 77999912022.

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 22021999977 - 2¹¹ = 22021997929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021999477) 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, 78092058 + ... + 78092339.

It is an arithmetic number, because the mean of its divisors is an integer number (3748425552).

Almost surely, 2^22021999977 is an apocalyptic number.

It is an amenable number.

22021999977 is a deficient number, since it is larger than the sum of its proper divisors (7965404439).

22021999977 is a wasteful number, since it uses less digits than its factorization.

22021999977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156184447.

The product of its (nonzero) digits is 2571912, while the sum is 57.

The spelling of 22021999977 in words is "twenty-two billion, twenty-one million, nine hundred ninety-nine thousand, nine hundred seventy-seven".