21122001148 has 12 divisors (see below), whose sum is σ = 38570610960. Its totient is φ = 10101826592.

The previous prime is 21122001139. The next prime is 21122001151. The reversal of 21122001148 is 84110022112.

It is a super-2 number, since 2×21122001148² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114793393 + ... + 114793576.

It is an arithmetic number, because the mean of its divisors is an integer number (3214217580).

Almost surely, 2^21122001148 is an apocalyptic number.

It is an amenable number.

21122001148 is a deficient number, since it is larger than the sum of its proper divisors (17448609812).

21122001148 is a wasteful number, since it uses less digits than its factorization.

21122001148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229586996 (or 229586994 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 21122001148 in words is "twenty-one billion, one hundred twenty-two million, one thousand, one hundred forty-eight".