123311010121 has 8 divisors (see below), whose sum is σ = 132898094784. Its totient is φ = 113738442960.

The previous prime is 123311010107. The next prime is 123311010157. The reversal of 123311010121 is 121010113321.

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 not a de Polignac number, because 123311010121 - 2¹³ = 123311001929 is a prime.

It is a super-2 number, since 2×123311010121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123311010095 and 123311010104.

It is not an unprimeable number, because it can be changed into a prime (123311010181) 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 7 ways as a sum of consecutive naturals, for example, 3611725 + ... + 3645706.

It is an arithmetic number, because the mean of its divisors is an integer number (16612261848).

Almost surely, 2^123311010121 is an apocalyptic number.

It is an amenable number.

123311010121 is a deficient number, since it is larger than the sum of its proper divisors (9587084663).

123311010121 is a wasteful number, since it uses less digits than its factorization.

123311010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258751.

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

Adding to 123311010121 its reverse (121010113321), we get a palindrome (244321123442).

The spelling of 123311010121 in words is "one hundred twenty-three billion, three hundred eleven million, ten thousand, one hundred twenty-one".