2001220316 has 6 divisors (see below), whose sum is σ = 3502135560. Its totient is φ = 1000610156.

The previous prime is 2001220307. The next prime is 2001220349. The reversal of 2001220316 is 6130221002.

It is a super-2 number, since 2×2001220316² = 8009765506342279712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001220294 and 2001220303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250152536 + ... + 250152543.

It is an arithmetic number, because the mean of its divisors is an integer number (583689260).

Almost surely, 2^2001220316 is an apocalyptic number.

It is an amenable number.

2001220316 is a deficient number, since it is larger than the sum of its proper divisors (1500915244).

2001220316 is a wasteful number, since it uses less digits than its factorization.

2001220316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500305083 (or 500305081 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2001220316 is about 44735.0010171007. The cubic root of 2001220316 is about 1260.1772480975.

Adding to 2001220316 its reverse (6130221002), we get a palindrome (8131441318).

The spelling of 2001220316 in words is "two billion, one million, two hundred twenty thousand, three hundred sixteen".