121321031210131 has 6 divisors (see below), whose sum is σ = 124688598184500. Its totient is φ = 118042084419336.

The previous prime is 121321031210129. The next prime is 121321031210173. The reversal of 121321031210131 is 131012130123121.

It is not a de Polignac number, because 121321031210131 - 2¹ = 121321031210129 is a prime.

It is a super-2 number, since 2×121321031210131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321031810131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44310090381 + ... + 44310093118.

It is an arithmetic number, because the mean of its divisors is an integer number (20781433030750).

Almost surely, 2^{121321031210131} is an apocalyptic number.

121321031210131 is a deficient number, since it is larger than the sum of its proper divisors (3367566974369).

121321031210131 is an frugal number, since it uses more digits than its factorization.

121321031210131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88620183573 (or 88620183536 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 121321031210131 its reverse (131012130123121), we get a palindrome (252333161333252).

The spelling of 121321031210131 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, thirty-one million, two hundred ten thousand, one hundred thirty-one".