2021222012 has 12 divisors (see below), whose sum is σ = 3537470160. Its totient is φ = 1010516256.

The previous prime is 2021222011. The next prime is 2021222017. The reversal of 2021222012 is 2102221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021222011) 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, 49289 + ... + 80447.

It is an arithmetic number, because the mean of its divisors is an integer number (294789180).

Almost surely, 2^2021222012 is an apocalyptic number.

It is an amenable number.

2021222012 is a deficient number, since it is larger than the sum of its proper divisors (1516248148).

2021222012 is a wasteful number, since it uses less digits than its factorization.

2021222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47380 (or 47378 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2021222012 is about 44958.0027581297. The cubic root of 2021222012 is about 1264.3617233385.

Adding to 2021222012 its reverse (2102221202), we get a palindrome (4123443214).

It can be divided in two parts, 20212 and 22012, that added together give a palindrome (42224).

The spelling of 2021222012 in words is "two billion, twenty-one million, two hundred twenty-two thousand, twelve".