121001311123 has 8 divisors (see below), whose sum is σ = 150858777600. Its totient is φ = 94286735880.

The previous prime is 121001311103. The next prime is 121001311127. The reversal of 121001311123 is 321113100121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001311123 is a prime.

It is a super-2 number, since 2×121001311123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001311097 and 121001311106.

It is not an unprimeable number, because it can be changed into a prime (121001311127) 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, 785722723 + ... + 785722876.

It is an arithmetic number, because the mean of its divisors is an integer number (18857347200).

Almost surely, 2^121001311123 is an apocalyptic number.

121001311123 is a deficient number, since it is larger than the sum of its proper divisors (29857466477).

121001311123 is a wasteful number, since it uses less digits than its factorization.

121001311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571445617.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121001311123 its reverse (321113100121), we get a palindrome (442114411244).

The spelling of 121001311123 in words is "one hundred twenty-one billion, one million, three hundred eleven thousand, one hundred twenty-three".