121001142005 has 8 divisors (see below), whose sum is σ = 145232155224. Its totient is φ = 96780390400.

The previous prime is 121001141993. The next prime is 121001142049. The reversal of 121001142005 is 500241100121.

It can be written as a sum of positive squares in 4 ways, for example, as 9702841009 + 111298300996 = 98503^2 + 333614^2 .

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

It is not a de Polignac number, because 121001142005 - 2¹⁸ = 121000879861 is a prime.

It is a Duffinian number.

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, 2539436 + ... + 2586645.

It is an arithmetic number, because the mean of its divisors is an integer number (18154019403).

Almost surely, 2^121001142005 is an apocalyptic number.

It is an amenable number.

121001142005 is a deficient number, since it is larger than the sum of its proper divisors (24231013219).

121001142005 is an equidigital number, since it uses as much as digits as its factorization.

121001142005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130807.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 121001142005 its reverse (500241100121), we get a palindrome (621242242126).

The spelling of 121001142005 in words is "one hundred twenty-one billion, one million, one hundred forty-two thousand, five".