1022211112018 has 4 divisors (see below), whose sum is σ = 1533316668030. Its totient is φ = 511105556008.

The previous prime is 1022211112009. The next prime is 1022211112019. The reversal of 1022211112018 is 8102111122201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 866867137249 + 155343974769 = 931057^2 + 394137^2 .

It is a super-2 number, since 2×1022211112018² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022211112018.

It is not an unprimeable number, because it can be changed into a prime (1022211112019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255552778003 + ... + 255552778006.

Almost surely, 2^{1022211112018} is an apocalyptic number.

1022211112018 is a deficient number, since it is larger than the sum of its proper divisors (511105556012).

1022211112018 is an equidigital number, since it uses as much as digits as its factorization.

1022211112018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511105556011.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 1022211112018 its reverse (8102111122201), we get a palindrome (9124322234219).

The spelling of 1022211112018 in words is "one trillion, twenty-two billion, two hundred eleven million, one hundred twelve thousand, eighteen".