1222012011 has 64 divisors (see below), whose sum is σ = 1922973696. Its totient is φ = 682809600.

The previous prime is 1222011977. The next prime is 1222012021. The reversal of 1222012011 is 1102102221.

It is not a de Polignac number, because 1222012011 - 2¹³ = 1222003819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222012021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3329550 + ... + 3329916.

It is an arithmetic number, because the mean of its divisors is an integer number (30046464).

Almost surely, 2^1222012011 is an apocalyptic number.

1222012011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222012011 is a deficient number, since it is larger than the sum of its proper divisors (700961685).

1222012011 is a wasteful number, since it uses less digits than its factorization.

1222012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

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

The square root of 1222012011 is about 34957.2883816809. The cubic root of 1222012011 is about 1069.1168101467.

Adding to 1222012011 its reverse (1102102221), we get a palindrome (2324114232).

The spelling of 1222012011 in words is "one billion, two hundred twenty-two million, twelve thousand, eleven".