1011223211 has 4 divisors (see below), whose sum is σ = 1021235424. Its totient is φ = 1001211000.

The previous prime is 1011223207. The next prime is 1011223219. The reversal of 1011223211 is 1123221101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011223211 - 2² = 1011223207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011223219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005955 + ... + 5006156.

It is an arithmetic number, because the mean of its divisors is an integer number (255308856).

Almost surely, 2^1011223211 is an apocalyptic number.

1011223211 is a deficient number, since it is larger than the sum of its proper divisors (10012213).

1011223211 is a wasteful number, since it uses less digits than its factorization.

1011223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012212.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1011223211 is about 31799.7360209169. The cubic root of 1011223211 is about 1003.7271613428.

Adding to 1011223211 its reverse (1123221101), we get a palindrome (2134444312).

The spelling of 1011223211 in words is "one billion, eleven million, two hundred twenty-three thousand, two hundred eleven".