211421212041 has 24 divisors (see below), whose sum is σ = 307295942400. Its totient is φ = 129232124736.

The previous prime is 211421212033. The next prime is 211421212043. The reversal of 211421212041 is 140212124112.

It is not a de Polignac number, because 211421212041 - 2³ = 211421212033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211421211999 and 211421212017.

It is not an unprimeable number, because it can be changed into a prime (211421212043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1323801 + ... + 1474886.

It is an arithmetic number, because the mean of its divisors is an integer number (12803997600).

Almost surely, 2^211421212041 is an apocalyptic number.

It is an amenable number.

211421212041 is a deficient number, since it is larger than the sum of its proper divisors (95874730359).

211421212041 is a wasteful number, since it uses less digits than its factorization.

211421212041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798865 (or 2798852 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211421212041 its reverse (140212124112), we get a palindrome (351633336153).

The spelling of 211421212041 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred twelve thousand, forty-one".