121525210445 has 8 divisors (see below), whose sum is σ = 145872408600. Its totient is φ = 97192064320.

The previous prime is 121525210427. The next prime is 121525210453. The reversal of 121525210445 is 544012525121.

It can be written as a sum of positive squares in 4 ways, for example, as 33148028356 + 88377182089 = 182066^2 + 297283^2 .

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

It is not a de Polignac number, because 121525210445 - 2¹² = 121525206349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3493970 + ... + 3528579.

It is an arithmetic number, because the mean of its divisors is an integer number (18234051075).

Almost surely, 2^121525210445 is an apocalyptic number.

It is an amenable number.

121525210445 is a deficient number, since it is larger than the sum of its proper divisors (24347198155).

121525210445 is an equidigital number, since it uses as much as digits as its factorization.

121525210445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026015.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 121525210445 its reverse (544012525121), we get a palindrome (665537735566).

The spelling of 121525210445 in words is "one hundred twenty-one billion, five hundred twenty-five million, two hundred ten thousand, four hundred forty-five".