2220144402 has 48 divisors (see below), whose sum is σ = 5111047872. Its totient is φ = 629805120.

The previous prime is 2220144343. The next prime is 2220144431. The reversal of 2220144402 is 2044410222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 931252 + ... + 933632.

It is an arithmetic number, because the mean of its divisors is an integer number (106480164).

Almost surely, 2^2220144402 is an apocalyptic number.

2220144402 is an abundant number, since it is smaller than the sum of its proper divisors (2890903470).

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

2220144402 is a wasteful number, since it uses less digits than its factorization.

2220144402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2542 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2220144402 is about 47118.4083135243. The cubic root of 2220144402 is about 1304.5490340026.

Adding to 2220144402 its reverse (2044410222), we get a palindrome (4264554624).

The spelling of 2220144402 in words is "two billion, two hundred twenty million, one hundred forty-four thousand, four hundred two".