1000021201331 has 2 divisors, whose sum is σ = 1000021201332. Its totient is φ = 1000021201330.

The previous prime is 1000021201279. The next prime is 1000021201349. The reversal of 1000021201331 is 1331021200001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000021201331 - 2¹⁴ = 1000021184947 is a prime.

It is a super-2 number, since 2×1000021201331² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1000021201381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010600665 + 500010600666.

It is an arithmetic number, because the mean of its divisors is an integer number (500010600666).

Almost surely, 2^{1000021201331} is an apocalyptic number.

1000021201331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021201331 is an equidigital number, since it uses as much as digits as its factorization.

1000021201331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1000021201331 its reverse (1331021200001), we get a palindrome (2331042401332).

The spelling of 1000021201331 in words is "one trillion, twenty-one million, two hundred one thousand, three hundred thirty-one".