10002219881 has 2 divisors, whose sum is σ = 10002219882. Its totient is φ = 10002219880.

The previous prime is 10002219863. The next prime is 10002219901. The reversal of 10002219881 is 18891220001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5256250000 + 4745969881 = 72500^2 + 68891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10002219881 is a prime.

It is a super-2 number, since 2×10002219881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10002219811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001109940 + 5001109941.

It is an arithmetic number, because the mean of its divisors is an integer number (5001109941).

Almost surely, 2^10002219881 is an apocalyptic number.

It is an amenable number.

10002219881 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002219881 is an equidigital number, since it uses as much as digits as its factorization.

10002219881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

Adding to 10002219881 its reverse (18891220001), we get a palindrome (28893439882).

The spelling of 10002219881 in words is "ten billion, two million, two hundred nineteen thousand, eight hundred eighty-one".