4212531021 has 24 divisors (see below), whose sum is σ = 5941771200. Its totient is φ = 2654313984.

The previous prime is 4212531013. The next prime is 4212531049. The reversal of 4212531021 is 1201352124.

It is not a de Polignac number, because 4212531021 - 2³ = 4212531013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4212531061) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 481936 + ... + 490598.

It is an arithmetic number, because the mean of its divisors is an integer number (247573800).

Almost surely, 2^4212531021 is an apocalyptic number.

It is an amenable number.

4212531021 is a deficient number, since it is larger than the sum of its proper divisors (1729240179).

4212531021 is a wasteful number, since it uses less digits than its factorization.

4212531021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9153 (or 9134 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4212531021 is about 64904.0139051507. The cubic root of 4212531021 is about 1615.0316487454.

Adding to 4212531021 its reverse (1201352124), we get a palindrome (5413883145).

The spelling of 4212531021 in words is "four billion, two hundred twelve million, five hundred thirty-one thousand, twenty-one".