1202021122 has 4 divisors (see below), whose sum is σ = 1803031686. Its totient is φ = 601010560.

The previous prime is 1202021113. The next prime is 1202021123. The reversal of 1202021122 is 2211202021.

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., 888695721 + 313325401 = 29811^2 + 17701^2 .

It is not an unprimeable number, because it can be changed into a prime (1202021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300505279 + ... + 300505282.

Almost surely, 2^1202021122 is an apocalyptic number.

1202021122 is a deficient number, since it is larger than the sum of its proper divisors (601010564).

1202021122 is an equidigital number, since it uses as much as digits as its factorization.

1202021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601010563.

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

The square root of 1202021122 is about 34670.1762614498. The cubic root of 1202021122 is about 1063.2548352762.

Adding to 1202021122 its reverse (2211202021), we get a palindrome (3413223143).

The spelling of 1202021122 in words is "one billion, two hundred two million, twenty-one thousand, one hundred twenty-two".