221440120002 has 56 divisors (see below), whose sum is σ = 524223698160. Its totient is φ = 69928450200.

The previous prime is 221440119997. The next prime is 221440120009. The reversal of 221440120002 is 200021044122.

221440120002 is a `hidden beast` number, since 2 + 21 + 440 + 1 + 200 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (221440120009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3969124 + ... + 4024527.

Almost surely, 2^221440120002 is an apocalyptic number.

221440120002 is an abundant number, since it is smaller than the sum of its proper divisors (302783578158).

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

221440120002 is an equidigital number, since it uses as much as digits as its factorization.

221440120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7993690 (or 7993675 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221440120002 its reverse (200021044122), we get a palindrome (421461164124).

The spelling of 221440120002 in words is "two hundred twenty-one billion, four hundred forty million, one hundred twenty thousand, two".