121620316730 has 16 divisors (see below), whose sum is σ = 238818076704. Its totient is φ = 44225569680.

The previous prime is 121620316729. The next prime is 121620316733. The reversal of 121620316730 is 37613026121.

It is not an unprimeable number, because it can be changed into a prime (121620316733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552819512 + ... + 552819731.

It is an arithmetic number, because the mean of its divisors is an integer number (14926129794).

Almost surely, 2^121620316730 is an apocalyptic number.

121620316730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121620316730 is a deficient number, since it is larger than the sum of its proper divisors (117197759974).

121620316730 is a wasteful number, since it uses less digits than its factorization.

121620316730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105639261.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 121620316730 in words is "one hundred twenty-one billion, six hundred twenty million, three hundred sixteen thousand, seven hundred thirty".