1000021222331 has 16 divisors (see below), whose sum is σ = 1009589603328. Its totient is φ = 990480960000.

The previous prime is 1000021222313. The next prime is 1000021222339. The reversal of 1000021222331 is 1332221200001.

It is a cyclic number.

It is not a de Polignac number, because 1000021222331 - 2³⁸ = 725143315387 is a prime.

It is a super-2 number, since 2×1000021222331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000021222339) 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, 333227831 + ... + 333230831.

It is an arithmetic number, because the mean of its divisors is an integer number (63099350208).

Almost surely, 2^{1000021222331} is an apocalyptic number.

1000021222331 is a deficient number, since it is larger than the sum of its proper divisors (9568380997).

1000021222331 is a wasteful number, since it uses less digits than its factorization.

1000021222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1000021222331 its reverse (1332221200001), we get a palindrome (2332242422332).

The spelling of 1000021222331 in words is "one trillion, twenty-one million, two hundred twenty-two thousand, three hundred thirty-one".