2012221971 has 12 divisors (see below), whose sum is σ = 2914875600. Its totient is φ = 1337635440.

The previous prime is 2012221957. The next prime is 2012221973. The reversal of 2012221971 is 1791222102.

It is not a de Polignac number, because 2012221971 - 2⁷ = 2012221843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012221973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317175 + ... + 323456.

It is an arithmetic number, because the mean of its divisors is an integer number (242906300).

Almost surely, 2^2012221971 is an apocalyptic number.

2012221971 is a deficient number, since it is larger than the sum of its proper divisors (902653629).

2012221971 is a wasteful number, since it uses less digits than its factorization.

2012221971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640986 (or 640983 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 2012221971 is about 44857.7972151999. The cubic root of 2012221971 is about 1262.4822928079.

The spelling of 2012221971 in words is "two billion, twelve million, two hundred twenty-one thousand, nine hundred seventy-one".