1121220022 has 24 divisors (see below), whose sum is σ = 1828222704. Its totient is φ = 515477664.

The previous prime is 1121220017. The next prime is 1121220041. The reversal of 1121220022 is 2200221211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1121219984 and 1121220011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82588 + ... + 95200.

It is an arithmetic number, because the mean of its divisors is an integer number (76175946).

Almost surely, 2^1121220022 is an apocalyptic number.

1121220022 is a deficient number, since it is larger than the sum of its proper divisors (707002682).

1121220022 is a wasteful number, since it uses less digits than its factorization.

1121220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12904 (or 12891 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1121220022 is about 33484.6236651989. The cubic root of 1121220022 is about 1038.8757643105.

Adding to 1121220022 its reverse (2200221211), we get a palindrome (3321441233).

The spelling of 1121220022 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, twenty-two".