121027854287461 has 12 divisors (see below), whose sum is σ = 133863797819520. Its totient is φ = 108518125834080.

The previous prime is 121027854287407. The next prime is 121027854287477. The reversal of 121027854287461 is 164782458720121.

It is not a de Polignac number, because 121027854287461 - 2¹⁷ = 121027854156389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121027854287396 and 121027854287405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121027864287461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1032267541 + ... + 1032384778.

It is an arithmetic number, because the mean of its divisors is an integer number (11155316484960).

Almost surely, 2^{121027854287461} is an apocalyptic number.

121027854287461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121027854287461 is a deficient number, since it is larger than the sum of its proper divisors (12835943532059).

121027854287461 is an equidigital number, since it uses as much as digits as its factorization.

121027854287461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064652476 (or 2064652403 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 58.

The spelling of 121027854287461 in words is "one hundred twenty-one trillion, twenty-seven billion, eight hundred fifty-four million, two hundred eighty-seven thousand, four hundred sixty-one".