121400123213 has 8 divisors (see below), whose sum is σ = 123610406400. Its totient is φ = 119194928608.

The previous prime is 121400123209. The next prime is 121400123233. The reversal of 121400123213 is 312321004121.

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 121400123213 - 2² = 121400123209 is a prime.

It is a super-2 number, since 2×121400123213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121400123233) 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, 1223981 + ... + 1319442.

It is an arithmetic number, because the mean of its divisors is an integer number (15451300800).

Almost surely, 2^121400123213 is an apocalyptic number.

It is an amenable number.

121400123213 is a deficient number, since it is larger than the sum of its proper divisors (2210283187).

121400123213 is an equidigital number, since it uses as much as digits as its factorization.

121400123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544291.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121400123213 its reverse (312321004121), we get a palindrome (433721127334).

The spelling of 121400123213 in words is "one hundred twenty-one billion, four hundred million, one hundred twenty-three thousand, two hundred thirteen".