121380061 has 6 divisors (see below), whose sum is σ = 133417886. Its totient is φ = 110345400.

The previous prime is 121380053. The next prime is 121380067. The reversal of 121380061 is 160083121.

It can be written as a sum of positive squares in only one way, i.e., 110124036 + 11256025 = 10494^2 + 3355^2 .

It is not a de Polignac number, because 121380061 - 2³ = 121380053 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 (121380067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501450 + ... + 501691.

Almost surely, 2^121380061 is an apocalyptic number.

121380061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121380061 is a deficient number, since it is larger than the sum of its proper divisors (12037825).

121380061 is a wasteful number, since it uses less digits than its factorization.

121380061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003163 (or 1003152 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 121380061 is about 11017.2619556766. The cubic root of 121380061 is about 495.1260584298.

The spelling of 121380061 in words is "one hundred twenty-one million, three hundred eighty thousand, sixty-one".