2120001212 has 24 divisors (see below), whose sum is σ = 4299724800. Its totient is φ = 895774320.

The previous prime is 2120001197. The next prime is 2120001229. The reversal of 2120001212 is 2121000212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2120001193 and 2120001202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531212 + ... + 535187.

It is an arithmetic number, because the mean of its divisors is an integer number (179155200).

Almost surely, 2^2120001212 is an apocalyptic number.

It is an amenable number.

2120001212 is an abundant number, since it is smaller than the sum of its proper divisors (2179723588).

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

2120001212 is a wasteful number, since it uses less digits than its factorization.

2120001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066481 (or 1066479 counting only the distinct ones).

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

The square root of 2120001212 is about 46043.4708943624. The cubic root of 2120001212 is about 1284.6319025196.

Adding to 2120001212 its reverse (2121000212), we get a palindrome (4241001424).

The spelling of 2120001212 in words is "two billion, one hundred twenty million, one thousand, two hundred twelve".