121231013043444 has 12 divisors (see below), whose sum is σ = 282872363768064. Its totient is φ = 40410337681144.

The previous prime is 121231013043431. The next prime is 121231013043467. The reversal of 121231013043444 is 444340310132121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×121231013043444² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5051292210132 + ... + 5051292210155.

It is an arithmetic number, because the mean of its divisors is an integer number (23572696980672).

Almost surely, 2^{121231013043444} is an apocalyptic number.

It is an amenable number.

121231013043444 is an abundant number, since it is smaller than the sum of its proper divisors (161641350724620).

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

121231013043444 is a wasteful number, since it uses less digits than its factorization.

121231013043444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102584420294 (or 10102584420292 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 121231013043444 its reverse (444340310132121), we get a palindrome (565571323175565).

The spelling of 121231013043444 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, thirteen million, forty-three thousand, four hundred forty-four".