211431012241421 has 8 divisors (see below), whose sum is σ = 249967699201920. Its totient is φ = 174977389441008.

The previous prime is 211431012241297. The next prime is 211431012241439. The reversal of 211431012241421 is 124142210134112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211431012241421 - 2³⁰ = 211429938499597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431012241451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520766039801 + ... + 520766040206.

It is an arithmetic number, because the mean of its divisors is an integer number (31245962400240).

Almost surely, 2^{211431012241421} is an apocalyptic number.

It is an amenable number.

211431012241421 is a deficient number, since it is larger than the sum of its proper divisors (38536686960499).

211431012241421 is a wasteful number, since it uses less digits than its factorization.

211431012241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041532080043.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 211431012241421 its reverse (124142210134112), we get a palindrome (335573222375533).

The spelling of 211431012241421 in words is "two hundred eleven trillion, four hundred thirty-one billion, twelve million, two hundred forty-one thousand, four hundred twenty-one".