211431143122120 has 32 divisors (see below), whose sum is σ = 487323000614520. Its totient is φ = 82509714388480.

The previous prime is 211431143122091. The next prime is 211431143122139. The reversal of 211431143122120 is 21221341134112.

It can be written as a sum of positive squares in 4 ways, for example, as 127735249208004 + 83695893914116 = 11302002^2 + 9148546^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64460712727 + ... + 64460716006.

Almost surely, 2^{211431143122120} is an apocalyptic number.

211431143122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211431143122120 is an abundant number, since it is smaller than the sum of its proper divisors (275891857492400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211431143122120 is a wasteful number, since it uses less digits than its factorization.

211431143122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128921428785 (or 128921428781 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 211431143122120 its reverse (21221341134112), we get a palindrome (232652484256232).

The spelling of 211431143122120 in words is "two hundred eleven trillion, four hundred thirty-one billion, one hundred forty-three million, one hundred twenty-two thousand, one hundred twenty".