2400202021 has 8 divisors (see below), whose sum is σ = 2744255360. Its totient is φ = 2056440528.

The previous prime is 2400202019. The next prime is 2400202067. The reversal of 2400202021 is 1202020042.

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

It is a cyclic number.

It is not a de Polignac number, because 2400202021 - 2¹ = 2400202019 is a prime.

It is a super-2 number, since 2×2400202021² = 11521939483224968882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2400201992 and 2400202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400208021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55041 + ... + 88486.

It is an arithmetic number, because the mean of its divisors is an integer number (343031920).

Almost surely, 2^2400202021 is an apocalyptic number.

It is an amenable number.

2400202021 is a deficient number, since it is larger than the sum of its proper divisors (344053339).

2400202021 is a wasteful number, since it uses less digits than its factorization.

2400202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145923.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2400202021 is about 48991.8566804729. The cubic root of 2400202021 is about 1338.9034656420.

Adding to 2400202021 its reverse (1202020042), we get a palindrome (3602222063).

The spelling of 2400202021 in words is "two billion, four hundred million, two hundred two thousand, twenty-one".