121027285487 has 4 divisors (see below), whose sum is σ = 121053651936. Its totient is φ = 121000919040.

The previous prime is 121027285439. The next prime is 121027285523. The reversal of 121027285487 is 784582720121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784582720121 = 17 ⋅46151924713.

It is a cyclic number.

It is not a de Polignac number, because 121027285487 - 2¹² = 121027281391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121027285417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13176338 + ... + 13185519.

It is an arithmetic number, because the mean of its divisors is an integer number (30263412984).

Almost surely, 2^121027285487 is an apocalyptic number.

121027285487 is a deficient number, since it is larger than the sum of its proper divisors (26366449).

121027285487 is an equidigital number, since it uses as much as digits as its factorization.

121027285487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26366448.

The product of its (nonzero) digits is 501760, while the sum is 47.

The spelling of 121027285487 in words is "one hundred twenty-one billion, twenty-seven million, two hundred eighty-five thousand, four hundred eighty-seven".