121752101456 has 10 divisors (see below), whose sum is σ = 235894696602. Its totient is φ = 60876050720.

The previous prime is 121752101431. The next prime is 121752101473. The reversal of 121752101456 is 654101257121.

It can be written as a sum of positive squares in only one way, i.e., 119619139600 + 2132961856 = 345860^2 + 46184^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3804753155 + ... + 3804753186.

Almost surely, 2^121752101456 is an apocalyptic number.

121752101456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121752101456 is a deficient number, since it is larger than the sum of its proper divisors (114142595146).

121752101456 is an equidigital number, since it uses as much as digits as its factorization.

121752101456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7609506349 (or 7609506343 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

Adding to 121752101456 its reverse (654101257121), we get a palindrome (775853358577).

The spelling of 121752101456 in words is "one hundred twenty-one billion, seven hundred fifty-two million, one hundred one thousand, four hundred fifty-six".