1200202421 has 8 divisors (see below), whose sum is σ = 1310332224. Its totient is φ = 1090242720.

The previous prime is 1200202403. The next prime is 1200202427. The reversal of 1200202421 is 1242020021.

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 1200202421 - 2¹⁰ = 1200201397 is a prime.

It is a super-2 number, since 2×1200202421² = 2880971702748522482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200202396 and 1200202405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200202427) 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, 27536 + ... + 56201.

It is an arithmetic number, because the mean of its divisors is an integer number (163791528).

Almost surely, 2^1200202421 is an apocalyptic number.

1200202421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200202421 is a deficient number, since it is larger than the sum of its proper divisors (110129803).

1200202421 is a wasteful number, since it uses less digits than its factorization.

1200202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85051.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1200202421 is about 34643.9377236480. The cubic root of 1200202421 is about 1062.7183170483.

Adding to 1200202421 its reverse (1242020021), we get a palindrome (2442222442).

The spelling of 1200202421 in words is "one billion, two hundred million, two hundred two thousand, four hundred twenty-one".