124212212421 has 16 divisors (see below), whose sum is σ = 181972116480. Its totient is φ = 74738542320.

The previous prime is 124212212417. The next prime is 124212212441.

124212212421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 124212212421 - 2² = 124212212417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124212212391 and 124212212400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124212212441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13535005 + ... + 13544178.

It is an arithmetic number, because the mean of its divisors is an integer number (11373257280).

Almost surely, 2^124212212421 is an apocalyptic number.

124212212421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124212212421 is a deficient number, since it is larger than the sum of its proper divisors (57759904059).

124212212421 is a wasteful number, since it uses less digits than its factorization.

124212212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27079336.

The product of its digits is 1024, while the sum is 24.

It can be divided in two parts, 124212 and 212421, that added together give a palindrome (336633).

The spelling of 124212212421 in words is "one hundred twenty-four billion, two hundred twelve million, two hundred twelve thousand, four hundred twenty-one".