1000212421 has 8 divisors (see below), whose sum is σ = 1133844320. Its totient is φ = 874679472.

The previous prime is 1000212377. The next prime is 1000212461. The reversal of 1000212421 is 1242120001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000212421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000212461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2024475 + ... + 2024968.

It is an arithmetic number, because the mean of its divisors is an integer number (141730540).

Almost surely, 2^1000212421 is an apocalyptic number.

It is an amenable number.

1000212421 is a deficient number, since it is larger than the sum of its proper divisors (133631899).

1000212421 is a wasteful number, since it uses less digits than its factorization.

1000212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049475.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1000212421 is about 31626.1350942539. The cubic root of 1000212421 is about 1000.0708019870.

Adding to 1000212421 its reverse (1242120001), we get a palindrome (2242332422).

The spelling of 1000212421 in words is "one billion, two hundred twelve thousand, four hundred twenty-one".