124220022421 has 16 divisors (see below), whose sum is σ = 141760756800. Its totient is φ = 107808131200.

The previous prime is 124220022391. The next prime is 124220022427.

124220022421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 124220022421 - 2²¹ = 124217925269 is a prime.

It is a super-2 number, since 2×124220022421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124220022392 and 124220022401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124220022427) 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, 2159275 + ... + 2216056.

It is an arithmetic number, because the mean of its divisors is an integer number (8860047300).

Almost surely, 2^124220022421 is an apocalyptic number.

124220022421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124220022421 is a deficient number, since it is larger than the sum of its proper divisors (17540734379).

124220022421 is a wasteful number, since it uses less digits than its factorization.

124220022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375460.

The product of its (nonzero) digits is 1024, while the sum is 22.

It can be divided in two parts, 1242200 and 22421, that added together give a palindrome (1264621).

The spelling of 124220022421 in words is "one hundred twenty-four billion, two hundred twenty million, twenty-two thousand, four hundred twenty-one".