4123211132421 has 56 divisors (see below), whose sum is σ = 6427290980544. Its totient is φ = 2641735736640.

The previous prime is 4123211132393. The next prime is 4123211132437. The reversal of 4123211132421 is 1242311123214.

4123211132421 is a `hidden beast` number, since 4 + 1 + 2 + 321 + 11 + 324 + 2 + 1 = 666.

It is not a de Polignac number, because 4123211132421 - 2⁹ = 4123211131909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123211122421) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 973080 + ... + 3032046.

It is an arithmetic number, because the mean of its divisors is an integer number (114773053224).

Almost surely, 2^{4123211132421} is an apocalyptic number.

4123211132421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4123211132421 is a deficient number, since it is larger than the sum of its proper divisors (2304079848123).

4123211132421 is an equidigital number, since it uses as much as digits as its factorization.

4123211132421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059093 (or 2059078 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 4123211132421 its reverse (1242311123214), we get a palindrome (5365522255635).

The spelling of 4123211132421 in words is "four trillion, one hundred twenty-three billion, two hundred eleven million, one hundred thirty-two thousand, four hundred twenty-one".