1211020222 has 16 divisors (see below), whose sum is σ = 1896741360. Its totient is φ = 579163648.

The previous prime is 1211020207. The next prime is 1211020229. The reversal of 1211020222 is 2220201121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211020229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91363 + ... + 103774.

It is an arithmetic number, because the mean of its divisors is an integer number (118546335).

Almost surely, 2^1211020222 is an apocalyptic number.

1211020222 is a deficient number, since it is larger than the sum of its proper divisors (685721138).

1211020222 is a wasteful number, since it uses less digits than its factorization.

1211020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195275.

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

The square root of 1211020222 is about 34799.7158321731. The cubic root of 1211020222 is about 1065.9016432243.

Adding to 1211020222 its reverse (2220201121), we get a palindrome (3431221343).

The spelling of 1211020222 in words is "one billion, two hundred eleven million, twenty thousand, two hundred twenty-two".