121954214757 has 8 divisors (see below), whose sum is σ = 162820425376. Its totient is φ = 81195406992.

The previous prime is 121954214741. The next prime is 121954214867. The reversal of 121954214757 is 757412459121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121954214757 - 2⁴ = 121954214741 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 (121954214357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26848063 + ... + 26852604.

It is an arithmetic number, because the mean of its divisors is an integer number (20352553172).

Almost surely, 2^121954214757 is an apocalyptic number.

It is an amenable number.

121954214757 is a deficient number, since it is larger than the sum of its proper divisors (40866210619).

121954214757 is an equidigital number, since it uses as much as digits as its factorization.

121954214757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53701427.

The product of its digits is 705600, while the sum is 48.

The spelling of 121954214757 in words is "one hundred twenty-one billion, nine hundred fifty-four million, two hundred fourteen thousand, seven hundred fifty-seven".