221020833396 has 48 divisors (see below), whose sum is σ = 587059296768. Its totient is φ = 64064008800.

The previous prime is 221020833391. The next prime is 221020833457. The reversal of 221020833396 is 693338020122.

221020833396 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020833391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36396970 + ... + 36403041.

It is an arithmetic number, because the mean of its divisors is an integer number (12230402016).

Almost surely, 2^221020833396 is an apocalyptic number.

It is an amenable number.

221020833396 is an abundant number, since it is smaller than the sum of its proper divisors (366038463372).

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

221020833396 is a wasteful number, since it uses less digits than its factorization.

221020833396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72800052 (or 72800050 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 221020833396 in words is "two hundred twenty-one billion, twenty million, eight hundred thirty-three thousand, three hundred ninety-six".