1011122211 has 16 divisors (see below), whose sum is σ = 1485289728. Its totient is φ = 606732000.

The previous prime is 1011122191. The next prime is 1011122219. The reversal of 1011122211 is 1122211101.

It is not a de Polignac number, because 1011122211 - 2¹¹ = 1011120163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011122219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148351 + ... + 155016.

It is an arithmetic number, because the mean of its divisors is an integer number (92830608).

Almost surely, 2^1011122211 is an apocalyptic number.

1011122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1011122211 is a deficient number, since it is larger than the sum of its proper divisors (474167517).

1011122211 is a wasteful number, since it uses less digits than its factorization.

1011122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303482.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1011122211 is about 31798.1479177640. The cubic root of 1011122211 is about 1003.6937431295.

Adding to 1011122211 its reverse (1122211101), we get a palindrome (2133333312).

It can be divided in two parts, 1011 and 122211, that multiplied together give a palindrome (123555321).

The spelling of 1011122211 in words is "one billion, eleven million, one hundred twenty-two thousand, two hundred eleven".