1172221022 has 48 divisors (see below), whose sum is σ = 2101663872. Its totient is φ = 490092120.

The previous prime is 1172221021. The next prime is 1172221067. The reversal of 1172221022 is 2201222711.

It is a junction number, because it is equal to n+sod(n) for n = 1172220985 and 1172221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172221021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1444997 + ... + 1445807.

It is an arithmetic number, because the mean of its divisors is an integer number (43784664).

Almost surely, 2^1172221022 is an apocalyptic number.

1172221022 is a deficient number, since it is larger than the sum of its proper divisors (929442850).

1172221022 is an frugal number, since it uses more digits than its factorization.

1172221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1172221022 is about 34237.7134458480. The cubic root of 1172221022 is about 1054.3945889739.

Adding to 1172221022 its reverse (2201222711), we get a palindrome (3373443733).

The spelling of 1172221022 in words is "one billion, one hundred seventy-two million, two hundred twenty-one thousand, twenty-two".