121531406410 has 8 divisors (see below), whose sum is σ = 218756531556. Its totient is φ = 48612562560.

The previous prime is 121531406389. The next prime is 121531406429. The reversal of 121531406410 is 14604135121.

It can be written as a sum of positive squares in 2 ways, for example, as 103760650161 + 17770756249 = 322119^2 + 133307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 6076570311 + ... + 6076570330.

Almost surely, 2^121531406410 is an apocalyptic number.

121531406410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121531406410 is a deficient number, since it is larger than the sum of its proper divisors (97225125146).

121531406410 is a wasteful number, since it uses less digits than its factorization.

121531406410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12153140648.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 121531406410 in words is "one hundred twenty-one billion, five hundred thirty-one million, four hundred six thousand, four hundred ten".