226199784021 has 16 divisors (see below), whose sum is σ = 305931922560. Its totient is φ = 148634922240.

The previous prime is 226199784017. The next prime is 226199784053. The reversal of 226199784021 is 120487991622.

226199784021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 226199784021 - 2² = 226199784017 is a prime.

It is a super-2 number, since 2×226199784021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226199784071) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 637785 + ... + 926913.

It is an arithmetic number, because the mean of its divisors is an integer number (19120745160).

Almost surely, 2^226199784021 is an apocalyptic number.

It is an amenable number.

226199784021 is a deficient number, since it is larger than the sum of its proper divisors (79732138539).

226199784021 is a wasteful number, since it uses less digits than its factorization.

226199784021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292876.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 226199784021 in words is "two hundred twenty-six billion, one hundred ninety-nine million, seven hundred eighty-four thousand, twenty-one".