100220312 has 16 divisors (see below), whose sum is σ = 188019360. Its totient is φ = 50081824.

The previous prime is 100220311. The next prime is 100220327. The reversal of 100220312 is 213022001.

It is a happy number.

It is a super-2 number, since 2×100220312² = 20088221874754688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100220293 and 100220302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220311) 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, 25418 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (11751210).

Almost surely, 2^100220312 is an apocalyptic number.

It is an amenable number.

100220312 is a deficient number, since it is larger than the sum of its proper divisors (87799048).

100220312 is a wasteful number, since it uses less digits than its factorization.

100220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090 (or 7086 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 100220312 is about 10011.0095395020. The cubic root of 100220312 is about 464.4994992508.

Adding to 100220312 its reverse (213022001), we get a palindrome (313242313).

The spelling of 100220312 in words is "one hundred million, two hundred twenty thousand, three hundred twelve".