221354155340 has 12 divisors (see below), whose sum is σ = 464843726256. Its totient is φ = 88541662128.

The previous prime is 221354155331. The next prime is 221354155391. The reversal of 221354155340 is 43551453122.

It is a self number, because there is not a number n which added to its sum of digits gives 221354155340.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5533853864 + ... + 5533853903.

It is an arithmetic number, because the mean of its divisors is an integer number (38736977188).

Almost surely, 2^221354155340 is an apocalyptic number.

221354155340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221354155340 is an abundant number, since it is smaller than the sum of its proper divisors (243489570916).

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

221354155340 is a wasteful number, since it uses less digits than its factorization.

221354155340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067707776 (or 11067707774 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 221354155340 in words is "two hundred twenty-one billion, three hundred fifty-four million, one hundred fifty-five thousand, three hundred forty".