121001210123 has 8 divisors (see below), whose sum is σ = 121146748800. Its totient is φ = 120855728448.

The previous prime is 121001210119. The next prime is 121001210159. The reversal of 121001210123 is 321012100121.

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 121001210123 - 2² = 121001210119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001210098 and 121001210107.

It is not an unprimeable number, because it can be changed into a prime (121001210023) 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, 5442113 + ... + 5464301.

It is an arithmetic number, because the mean of its divisors is an integer number (15143343600).

Almost surely, 2^121001210123 is an apocalyptic number.

121001210123 is a deficient number, since it is larger than the sum of its proper divisors (145538677).

121001210123 is a wasteful number, since it uses less digits than its factorization.

121001210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28501.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121001210123 its reverse (321012100121), we get a palindrome (442013310244).

The spelling of 121001210123 in words is "one hundred twenty-one billion, one million, two hundred ten thousand, one hundred twenty-three".