121231230101 has 4 divisors (see below), whose sum is σ = 121315478400. Its totient is φ = 121146981804.

The previous prime is 121231230089. The next prime is 121231230103. The reversal of 121231230101 is 101032132121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121231230101 - 2¹⁴ = 121231213717 is a prime.

It is a super-2 number, since 2×121231230101² (a number of 23 digits) contains 22 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 121231230101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121231230103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42121991 + ... + 42124868.

It is an arithmetic number, because the mean of its divisors is an integer number (30328869600).

Almost surely, 2^121231230101 is an apocalyptic number.

It is an amenable number.

121231230101 is a deficient number, since it is larger than the sum of its proper divisors (84248299).

121231230101 is an equidigital number, since it uses as much as digits as its factorization.

121231230101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84248298.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121231230101 its reverse (101032132121), we get a palindrome (222263362222).

The spelling of 121231230101 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty thousand, one hundred one".