121513105150 has 24 divisors (see below), whose sum is σ = 226165897224. Its totient is φ = 48572656800.

The previous prime is 121513105057. The next prime is 121513105159. The reversal of 121513105150 is 51501315121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121513105159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 739236 + ... + 888535.

It is an arithmetic number, because the mean of its divisors is an integer number (9423579051).

Almost surely, 2^121513105150 is an apocalyptic number.

121513105150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121513105150 is a deficient number, since it is larger than the sum of its proper divisors (104652792074).

121513105150 is a wasteful number, since it uses less digits than its factorization.

121513105150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629276 (or 1629271 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 121513105150 in words is "one hundred twenty-one billion, five hundred thirteen million, one hundred five thousand, one hundred fifty".