226021705721040 has 80 divisors (see below), whose sum is σ = 700681550260608. Its totient is φ = 60271227975168.

The previous prime is 226021705720997. The next prime is 226021705721041. The reversal of 226021705721040 is 40127507120622.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×226021705721040² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 226021705721040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226021705721041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2260317 + ... + 21381123.

Almost surely, 2^{226021705721040} is an apocalyptic number.

226021705721040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226021705721040 is an abundant number, since it is smaller than the sum of its proper divisors (474659844539568).

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

226021705721040 is a wasteful number, since it uses less digits than its factorization.

226021705721040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19170076 (or 19170070 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 226021705721040 in words is "two hundred twenty-six trillion, twenty-one billion, seven hundred five million, seven hundred twenty-one thousand, forty".