1222021011 has 8 divisors (see below), whose sum is σ = 1630918800. Its totient is φ = 813901952.

The previous prime is 1222020953. The next prime is 1222021037. The reversal of 1222021011 is 1101202221.

1222021011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1222021011 - 2⁷ = 1222020883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222041011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191010 + ... + 197303.

It is an arithmetic number, because the mean of its divisors is an integer number (203864850).

Almost surely, 2^1222021011 is an apocalyptic number.

1222021011 is a deficient number, since it is larger than the sum of its proper divisors (408897789).

1222021011 is a wasteful number, since it uses less digits than its factorization.

1222021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389365.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222021011 is about 34957.4171099639. The cubic root of 1222021011 is about 1069.1194347875.

Adding to 1222021011 its reverse (1101202221), we get a palindrome (2323223232).

The spelling of 1222021011 in words is "one billion, two hundred twenty-two million, twenty-one thousand, eleven".