212021872041 has 16 divisors (see below), whose sum is σ = 323087745024. Its totient is φ = 121152806544.

The previous prime is 212021872033. The next prime is 212021872087. The reversal of 212021872041 is 140278120212.

It is not a de Polignac number, because 212021872041 - 2³ = 212021872033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212021872091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437646 + ... + 1578248.

It is an arithmetic number, because the mean of its divisors is an integer number (20192984064).

Almost surely, 2^212021872041 is an apocalyptic number.

212021872041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212021872041 is a deficient number, since it is larger than the sum of its proper divisors (111065872983).

212021872041 is a wasteful number, since it uses less digits than its factorization.

212021872041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212420.

The product of its (nonzero) digits is 3584, while the sum is 30.

Adding to 212021872041 its reverse (140278120212), we get a palindrome (352299992253).

The spelling of 212021872041 in words is "two hundred twelve billion, twenty-one million, eight hundred seventy-two thousand, forty-one".