121325212510 has 64 divisors (see below), whose sum is σ = 230329972224. Its totient is φ = 45967017600.

The previous prime is 121325212507. The next prime is 121325212513. The reversal of 121325212510 is 15212523121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121325212507) and next prime (121325212513).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121325212513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1829757 + ... + 1894903.

It is an arithmetic number, because the mean of its divisors is an integer number (3598905816).

Almost surely, 2^121325212510 is an apocalyptic number.

121325212510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121325212510 is a deficient number, since it is larger than the sum of its proper divisors (109004759714).

121325212510 is a wasteful number, since it uses less digits than its factorization.

121325212510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65329.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 121325212510 its reverse (15212523121), we get a palindrome (136537735631).

The spelling of 121325212510 in words is "one hundred twenty-one billion, three hundred twenty-five million, two hundred twelve thousand, five hundred ten".