22001212112148 has 18 divisors (see below), whose sum is σ = 55614175061354. Its totient is φ = 7333737370704.

The previous prime is 22001212112147. The next prime is 22001212112221. The reversal of 22001212112148 is 84121121210022.

22001212112148 is a `hidden beast` number, since 220 + 0 + 1 + 212 + 11 + 214 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15043708618884 + 6957503493264 = 3878622^2 + 2637708^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001212112147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305572390411 + ... + 305572390482.

Almost surely, 2^{22001212112148} is an apocalyptic number.

It is an amenable number.

22001212112148 is an abundant number, since it is smaller than the sum of its proper divisors (33612962949206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22001212112148 is a wasteful number, since it uses less digits than its factorization.

22001212112148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611144780903 (or 611144780898 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The spelling of 22001212112148 in words is "twenty-two trillion, one billion, two hundred twelve million, one hundred twelve thousand, one hundred forty-eight".