124221420102 has 32 divisors (see below), whose sum is σ = 268029151488. Its totient is φ = 38154072096.

The previous prime is 124221420013. The next prime is 124221420173. The reversal of 124221420102 is 201024122421.

It is a super-2 number, since 2×124221420102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370458 + ... + 1458285.

It is an arithmetic number, because the mean of its divisors is an integer number (8375910984).

Almost surely, 2^124221420102 is an apocalyptic number.

124221420102 is an abundant number, since it is smaller than the sum of its proper divisors (143807731386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124221420102 is a wasteful number, since it uses less digits than its factorization.

124221420102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829324.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 124221420102 its reverse (201024122421), we get a palindrome (325245542523).

The spelling of 124221420102 in words is "one hundred twenty-four billion, two hundred twenty-one million, four hundred twenty thousand, one hundred two".