211400242232421 has 32 divisors (see below), whose sum is σ = 329237173584000. Its totient is φ = 119229922887680.

The previous prime is 211400242232419. The next prime is 211400242232497. The reversal of 211400242232421 is 124232242004112.

It is not a de Polignac number, because 211400242232421 - 2¹ = 211400242232419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211400242234421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2116958646 + ... + 2117058503.

It is an arithmetic number, because the mean of its divisors is an integer number (10288661674500).

Almost surely, 2^{211400242232421} is an apocalyptic number.

It is an amenable number.

211400242232421 is a deficient number, since it is larger than the sum of its proper divisors (117836931351579).

211400242232421 is a wasteful number, since it uses less digits than its factorization.

211400242232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234017269.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 211400242232421 its reverse (124232242004112), we get a palindrome (335632484236533).

The spelling of 211400242232421 in words is "two hundred eleven trillion, four hundred billion, two hundred forty-two million, two hundred thirty-two thousand, four hundred twenty-one".