121551117045 has 8 divisors (see below), whose sum is σ = 194481787296. Its totient is φ = 64827262416.

The previous prime is 121551117011. The next prime is 121551117089. The reversal of 121551117045 is 540711155121.

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

It is not a de Polignac number, because 121551117045 - 2¹⁴ = 121551100661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121551116997 and 121551117015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4051703887 + ... + 4051703916.

It is an arithmetic number, because the mean of its divisors is an integer number (24310223412).

Almost surely, 2^121551117045 is an apocalyptic number.

121551117045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121551117045 is a deficient number, since it is larger than the sum of its proper divisors (72930670251).

121551117045 is an equidigital number, since it uses as much as digits as its factorization.

121551117045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103407811.

The product of its (nonzero) digits is 7000, while the sum is 33.

The spelling of 121551117045 in words is "one hundred twenty-one billion, five hundred fifty-one million, one hundred seventeen thousand, forty-five".