1000211421 has 16 divisors (see below), whose sum is σ = 1505021760. Its totient is φ = 585285120.

The previous prime is 1000211411. The next prime is 1000211423. The reversal of 1000211421 is 1241120001.

It is a happy number.

It is not a de Polignac number, because 1000211421 - 2¹⁰ = 1000210397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000211397 and 1000211406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000211423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521620 + ... + 523533.

It is an arithmetic number, because the mean of its divisors is an integer number (94063860).

Almost surely, 2^1000211421 is an apocalyptic number.

1000211421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000211421 is a deficient number, since it is larger than the sum of its proper divisors (504810339).

1000211421 is a wasteful number, since it uses less digits than its factorization.

1000211421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045196.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1000211421 is about 31626.1192845407. The cubic root of 1000211421 is about 1000.0704687007.

Adding to 1000211421 its reverse (1241120001), we get a palindrome (2241331422).

The spelling of 1000211421 in words is "one billion, two hundred eleven thousand, four hundred twenty-one".