221020142302 has 8 divisors (see below), whose sum is σ = 333515424816. Its totient is φ = 109848334032.

The previous prime is 221020142261. The next prime is 221020142303. The reversal of 221020142302 is 203241020122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221020142302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020142303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330868143 + ... + 330868810.

It is an arithmetic number, because the mean of its divisors is an integer number (41689428102).

Almost surely, 2^221020142302 is an apocalyptic number.

221020142302 is a deficient number, since it is larger than the sum of its proper divisors (112495282514).

221020142302 is a wasteful number, since it uses less digits than its factorization.

221020142302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661737122.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 221020142302 its reverse (203241020122), we get a palindrome (424261162424).

It can be divided in two parts, 2210201 and 42302, that added together give a triangular number (2252503 = T₂₁₂₂).

The spelling of 221020142302 in words is "two hundred twenty-one billion, twenty million, one hundred forty-two thousand, three hundred two".