121512023431534 has 32 divisors (see below), whose sum is σ = 186913670307840. Its totient is φ = 59210669361600.

The previous prime is 121512023431501. The next prime is 121512023431597. The reversal of 121512023431534 is 435134320215121.

121512023431534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121512023431493 and 121512023431502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365963157 + ... + 366295039.

It is an arithmetic number, because the mean of its divisors is an integer number (5841052197120).

Almost surely, 2^{121512023431534} is an apocalyptic number.

121512023431534 is a deficient number, since it is larger than the sum of its proper divisors (65401646876306).

121512023431534 is a wasteful number, since it uses less digits than its factorization.

121512023431534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336696.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 121512023431534 its reverse (435134320215121), we get a palindrome (556646343646655).

The spelling of 121512023431534 in words is "one hundred twenty-one trillion, five hundred twelve billion, twenty-three million, four hundred thirty-one thousand, five hundred thirty-four".