201220331002 has 4 divisors (see below), whose sum is σ = 301830496506. Its totient is φ = 100610165500.

The previous prime is 201220330981. The next prime is 201220331021. The reversal of 201220331002 is 200133022102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 200891307681 + 329023321 = 448209^2 + 18139^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50305082749 + ... + 50305082752.

Almost surely, 2^201220331002 is an apocalyptic number.

201220331002 is a deficient number, since it is larger than the sum of its proper divisors (100610165504).

201220331002 is a wasteful number, since it uses less digits than its factorization.

201220331002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100610165503.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 201220331002 its reverse (200133022102), we get a palindrome (401353353104).

The spelling of 201220331002 in words is "two hundred one billion, two hundred twenty million, three hundred thirty-one thousand, two".