121511142101 has 8 divisors (see below), whose sum is σ = 121891454520. Its totient is φ = 121131122112.

The previous prime is 121511142061. The next prime is 121511142121. The reversal of 121511142101 is 101241115121.

It can be written as a sum of positive squares in 4 ways, for example, as 20036402500 + 101474739601 = 141550^2 + 318551^2 .

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 121511142101 - 2⁶ = 121511142037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121511142121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774551 + ... + 918123.

It is an arithmetic number, because the mean of its divisors is an integer number (15236431815).

Almost surely, 2^121511142101 is an apocalyptic number.

It is an amenable number.

121511142101 is a deficient number, since it is larger than the sum of its proper divisors (380312419).

121511142101 is a wasteful number, since it uses less digits than its factorization.

121511142101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146215.

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 121511142101 its reverse (101241115121), we get a palindrome (222752257222).

The spelling of 121511142101 in words is "one hundred twenty-one billion, five hundred eleven million, one hundred forty-two thousand, one hundred one".