20211522124 has 6 divisors (see below), whose sum is σ = 35370163724. Its totient is φ = 10105761060.

The previous prime is 20211522109. The next prime is 20211522161. The reversal of 20211522124 is 42122511202.

It is a junction number, because it is equal to n+sod(n) for n = 20211522095 and 20211522104.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2526440262 + ... + 2526440269.

Almost surely, 2^20211522124 is an apocalyptic number.

It is an amenable number.

20211522124 is a deficient number, since it is larger than the sum of its proper divisors (15158641600).

20211522124 is a wasteful number, since it uses less digits than its factorization.

20211522124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052880535 (or 5052880533 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The spelling of 20211522124 in words is "twenty billion, two hundred eleven million, five hundred twenty-two thousand, one hundred twenty-four".