121421031319 has 24 divisors (see below), whose sum is σ = 149605574400. Its totient is φ = 97918926336.

The previous prime is 121421031317. The next prime is 121421031331. The reversal of 121421031319 is 913130124121.

It is not a de Polignac number, because 121421031319 - 2¹ = 121421031317 is a prime.

It is a super-2 number, since 2×121421031319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121421031317) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2515914 + ... + 2563720.

It is an arithmetic number, because the mean of its divisors is an integer number (6233565600).

Almost surely, 2^121421031319 is an apocalyptic number.

121421031319 is a deficient number, since it is larger than the sum of its proper divisors (28184543081).

121421031319 is a wasteful number, since it uses less digits than its factorization.

121421031319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50887 (or 50880 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 121421031319 in words is "one hundred twenty-one billion, four hundred twenty-one million, thirty-one thousand, three hundred nineteen".