121142501 has 8 divisors (see below), whose sum is σ = 121955544. Its totient is φ = 120332800.

The previous prime is 121142467. The next prime is 121142503. The reversal of 121142501 is 105241121.

It can be written as a sum of positive squares in 4 ways, for example, as 20160100 + 100982401 = 4490^2 + 10049^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121142501 - 2¹⁰ = 121141477 is a prime.

It is a super-3 number, since 3×121142501³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121142501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126641 + ... + 127593.

It is an arithmetic number, because the mean of its divisors is an integer number (15244443).

Almost surely, 2^121142501 is an apocalyptic number.

It is an amenable number.

121142501 is a deficient number, since it is larger than the sum of its proper divisors (813043).

121142501 is an equidigital number, since it uses as much as digits as its factorization.

121142501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671.

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

The square root of 121142501 is about 11006.4754122289. The cubic root of 121142501 is about 494.8028341043.

Adding to 121142501 its reverse (105241121), we get a palindrome (226383622).

The spelling of 121142501 in words is "one hundred twenty-one million, one hundred forty-two thousand, five hundred one".