121932765490 has 32 divisors (see below), whose sum is σ = 224858709936. Its totient is φ = 47577891840.

The previous prime is 121932765469. The next prime is 121932765503. The reversal of 121932765490 is 94567239121.

121932765490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 27741289 + 121905024201 = 5267^2 + 349149^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5792224 + ... + 5813236.

Almost surely, 2^121932765490 is an apocalyptic number.

121932765490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121932765490 is a deficient number, since it is larger than the sum of its proper divisors (102925944446).

121932765490 is a wasteful number, since it uses less digits than its factorization.

121932765490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35214.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 121932765490 in words is "one hundred twenty-one billion, nine hundred thirty-two million, seven hundred sixty-five thousand, four hundred ninety".