1021211222 has 4 divisors (see below), whose sum is σ = 1531816836. Its totient is φ = 510605610.

The previous prime is 1021211209. The next prime is 1021211251. The reversal of 1021211222 is 2221121201.

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

It is a junction number, because it is equal to n+sod(n) for n = 1021211197 and 1021211206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255302804 + ... + 255302807.

It is an arithmetic number, because the mean of its divisors is an integer number (382954209).

Almost surely, 2^1021211222 is an apocalyptic number.

1021211222 is a deficient number, since it is larger than the sum of its proper divisors (510605614).

1021211222 is an equidigital number, since it uses as much as digits as its factorization.

1021211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510605613.

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

The square root of 1021211222 is about 31956.3956353028. The cubic root of 1021211222 is about 1007.0209975613.

Adding to 1021211222 its reverse (2221121201), we get a palindrome (3242332423).

The spelling of 1021211222 in words is "one billion, twenty-one million, two hundred eleven thousand, two hundred twenty-two".