2124202421 has 8 divisors (see below), whose sum is σ = 2418064704. Its totient is φ = 1847132320.

The previous prime is 2124202373. The next prime is 2124202433. The reversal of 2124202421 is 1242024212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2124202421 - 2²² = 2120008117 is a prime.

It is a super-2 number, since 2×2124202421² = 9024471850764522482, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2124202393 and 2124202402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124204421) 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, 4197776 + ... + 4198281.

It is an arithmetic number, because the mean of its divisors is an integer number (302258088).

Almost surely, 2^2124202421 is an apocalyptic number.

It is an amenable number.

2124202421 is a deficient number, since it is larger than the sum of its proper divisors (293862283).

2124202421 is a wasteful number, since it uses less digits than its factorization.

2124202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8396091.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2124202421 is about 46089.0705156873. The cubic root of 2124202421 is about 1285.4799281268.

Adding to 2124202421 its reverse (1242024212), we get a palindrome (3366226633).

It can be divided in two parts, 2 and 124202421, that multiplied together give a palindrome (248404842).

The spelling of 2124202421 in words is "two billion, one hundred twenty-four million, two hundred two thousand, four hundred twenty-one".