121461026661 has 32 divisors (see below), whose sum is σ = 197907064320. Its totient is φ = 73154912832.

The previous prime is 121461026597. The next prime is 121461026689. The reversal of 121461026661 is 166620164121.

It is not a de Polignac number, because 121461026661 - 2⁶ = 121461026597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121461096661) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3664810 + ... + 3697803.

It is an arithmetic number, because the mean of its divisors is an integer number (6184595760).

Almost surely, 2^121461026661 is an apocalyptic number.

It is an amenable number.

121461026661 is a deficient number, since it is larger than the sum of its proper divisors (76446037659).

121461026661 is a wasteful number, since it uses less digits than its factorization.

121461026661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362682 (or 7362676 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 121461026661 in words is "one hundred twenty-one billion, four hundred sixty-one million, twenty-six thousand, six hundred sixty-one".