1000001220212 has 24 divisors (see below), whose sum is σ = 1767558933504. Its totient is φ = 495001245312.

The previous prime is 1000001220209. The next prime is 1000001220223. The reversal of 1000001220212 is 2120221000001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1000001220193 and 1000001220202.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1870373 + ... + 2344844.

It is an arithmetic number, because the mean of its divisors is an integer number (73648288896).

Almost surely, 2^{1000001220212} is an apocalyptic number.

It is an amenable number.

1000001220212 is a deficient number, since it is larger than the sum of its proper divisors (767557713292).

1000001220212 is a wasteful number, since it uses less digits than its factorization.

1000001220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215815 (or 4215813 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000001220212 its reverse (2120221000001), we get a palindrome (3120222220213).

The spelling of 1000001220212 in words is "one trillion, one million, two hundred twenty thousand, two hundred twelve".