121523442251120 has 80 divisors (see below), whose sum is σ = 347744004000960. Its totient is φ = 38460166336512.

The previous prime is 121523442251119. The next prime is 121523442251131. The reversal of 121523442251120 is 21152244325121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×121523442251120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8346382985 + ... + 8346397544.

It is an arithmetic number, because the mean of its divisors is an integer number (4346800050012).

Almost surely, 2^{121523442251120} is an apocalyptic number.

121523442251120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121523442251120 is an abundant number, since it is smaller than the sum of its proper divisors (226220561749840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121523442251120 is a wasteful number, since it uses less digits than its factorization.

121523442251120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16692780562 (or 16692780556 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 121523442251120 its reverse (21152244325121), we get a palindrome (142675686576241).

The spelling of 121523442251120 in words is "one hundred twenty-one trillion, five hundred twenty-three billion, four hundred forty-two million, two hundred fifty-one thousand, one hundred twenty".