21222201111248 has 20 divisors (see below), whose sum is σ = 41118086890080. Its totient is φ = 10611081913824.

The previous prime is 21222201111247. The next prime is 21222201111253. The reversal of 21222201111248 is 84211110222212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222201111248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222201111247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15149411 + ... + 16490877.

It is an arithmetic number, because the mean of its divisors is an integer number (2055904344504).

Almost surely, 2^{21222201111248} is an apocalyptic number.

It is an amenable number.

21222201111248 is a deficient number, since it is larger than the sum of its proper divisors (19895885778832).

21222201111248 is a wasteful number, since it uses less digits than its factorization.

21222201111248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330234 (or 2330228 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The spelling of 21222201111248 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred one million, one hundred eleven thousand, two hundred forty-eight".