1000120212 has 216 divisors, whose sum is σ = 3212192256. Its totient is φ = 255488256.

The previous prime is 1000120181. The next prime is 1000120243. The reversal of 1000120212 is 2120210001.

It is an interprime number because it is at equal distance from previous prime (1000120181) and next prime (1000120243).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000120194 and 1000120203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4484733 + ... + 4484955.

Almost surely, 2^1000120212 is an apocalyptic number.

1000120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000120212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606096128).

1000120212 is an abundant number, since it is smaller than the sum of its proper divisors (2212072044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000120212 is a wasteful number, since it uses less digits than its factorization.

1000120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000120212 is about 31624.6772631754. The cubic root of 1000120212 is about 1000.0400690611.

Adding to 1000120212 its reverse (2120210001), we get a palindrome (3120330213).

The spelling of 1000120212 in words is "one billion, one hundred twenty thousand, two hundred twelve".