121213131411 has 8 divisors (see below), whose sum is σ = 161634781584. Its totient is φ = 80800117760.

The previous prime is 121213131407. The next prime is 121213131493. The reversal of 121213131411 is 114131312121.

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 121213131411 - 2² = 121213131407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121213131311) 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, 2126310 + ... + 2182571.

It is an arithmetic number, because the mean of its divisors is an integer number (20204347698).

Almost surely, 2^121213131411 is an apocalyptic number.

121213131411 is a deficient number, since it is larger than the sum of its proper divisors (40421650173).

121213131411 is an equidigital number, since it uses as much as digits as its factorization.

121213131411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318261.

The product of its digits is 144, while the sum is 21.

Adding to 121213131411 its reverse (114131312121), we get a palindrome (235344443532).

The spelling of 121213131411 in words is "one hundred twenty-one billion, two hundred thirteen million, one hundred thirty-one thousand, four hundred eleven".