121751527153 has 4 divisors (see below), whose sum is σ = 122148112240. Its totient is φ = 121354942068.

The previous prime is 121751527099. The next prime is 121751527171. The reversal of 121751527153 is 351725157121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 351725157121 = 13 ⋅27055781317.

It is a cyclic number.

It is not a de Polignac number, because 121751527153 - 2⁹ = 121751526641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121751527193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198292083 + ... + 198292696.

It is an arithmetic number, because the mean of its divisors is an integer number (30537028060).

Almost surely, 2^121751527153 is an apocalyptic number.

It is an amenable number.

121751527153 is a deficient number, since it is larger than the sum of its proper divisors (396585087).

121751527153 is an equidigital number, since it uses as much as digits as its factorization.

121751527153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396585086.

The product of its digits is 73500, while the sum is 40.

The spelling of 121751527153 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred twenty-seven thousand, one hundred fifty-three".