121555550030 has 16 divisors (see below), whose sum is σ = 218905778880. Its totient is φ = 48598711392.

The previous prime is 121555550029. The next prime is 121555550101. The reversal of 121555550030 is 30055555121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2916854 + ... + 2958233.

It is an arithmetic number, because the mean of its divisors is an integer number (13681611180).

Almost surely, 2^121555550030 is an apocalyptic number.

121555550030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121555550030 is a deficient number, since it is larger than the sum of its proper divisors (97350228850).

121555550030 is a wasteful number, since it uses less digits than its factorization.

121555550030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877163.

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 121555550030 in words is "one hundred twenty-one billion, five hundred fifty-five million, five hundred fifty thousand, thirty".