121551117046 has 4 divisors (see below), whose sum is σ = 182326675572. Its totient is φ = 60775558522.

The previous prime is 121551117011. The next prime is 121551117089. The reversal of 121551117046 is 640711155121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 640711155121 = 254383 ⋅2518687.

It is a super-2 number, since 2×121551117046² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 30387779260 + ... + 30387779263.

It is an arithmetic number, because the mean of its divisors is an integer number (45581668893).

Almost surely, 2^121551117046 is an apocalyptic number.

121551117046 is a deficient number, since it is larger than the sum of its proper divisors (60775558526).

121551117046 is an equidigital number, since it uses as much as digits as its factorization.

121551117046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60775558525.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 121551117046 in words is "one hundred twenty-one billion, five hundred fifty-one million, one hundred seventeen thousand, forty-six".