22255544421 has 32 divisors (see below), whose sum is σ = 35980060800. Its totient is φ = 13483895040.

The previous prime is 22255544419. The next prime is 22255544453. The reversal of 22255544421 is 12444555222.

22255544421 is a `hidden beast` number, since 2 + 22 + 55 + 544 + 42 + 1 = 666.

It is not a de Polignac number, because 22255544421 - 2¹ = 22255544419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22255544471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1087875 + ... + 1108143.

It is an arithmetic number, because the mean of its divisors is an integer number (1124376900).

Almost surely, 2^22255544421 is an apocalyptic number.

It is an amenable number.

22255544421 is a deficient number, since it is larger than the sum of its proper divisors (13724516379).

22255544421 is a wasteful number, since it uses less digits than its factorization.

22255544421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23986 (or 23980 counting only the distinct ones).

The product of its digits is 128000, while the sum is 36.

The spelling of 22255544421 in words is "twenty-two billion, two hundred fifty-five million, five hundred forty-four thousand, four hundred twenty-one".