11021222987 has 2 divisors, whose sum is σ = 11021222988. Its totient is φ = 11021222986.

The previous prime is 11021222957. The next prime is 11021223019. The reversal of 11021222987 is 78922212011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11021222987 - 2¹⁰ = 11021221963 is a prime.

It is a super-2 number, since 2×11021222987² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11021222917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510611493 + 5510611494.

It is an arithmetic number, because the mean of its divisors is an integer number (5510611494).

Almost surely, 2^11021222987 is an apocalyptic number.

11021222987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021222987 is an equidigital number, since it uses as much as digits as its factorization.

11021222987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

Adding to 11021222987 its reverse (78922212011), we get a palindrome (89943434998).

The spelling of 11021222987 in words is "eleven billion, twenty-one million, two hundred twenty-two thousand, nine hundred eighty-seven".