1021221122 has 8 divisors (see below), whose sum is σ = 1533815676. Its totient is φ = 509949232.

The previous prime is 1021221077. The next prime is 1021221133. The reversal of 1021221122 is 2211221201.

1021221122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 922397641 + 98823481 = 30371^2 + 9941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1021221097 and 1021221106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328733 + ... + 331824.

Almost surely, 2^1021221122 is an apocalyptic number.

1021221122 is a deficient number, since it is larger than the sum of its proper divisors (512594554).

1021221122 is an equidigital number, since it uses as much as digits as its factorization.

1021221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661332.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1021221122 is about 31956.5505334978. The cubic root of 1021221122 is about 1007.0242516957.

Adding to 1021221122 its reverse (2211221201), we get a palindrome (3232442323).

The spelling of 1021221122 in words is "one billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".