1011220221011 has 32 divisors (see below), whose sum is σ = 1358020919808. Its totient is φ = 727191210240.

The previous prime is 1011220220993. The next prime is 1011220221013. The reversal of 1011220221011 is 1101220221101.

1011220221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011220221011 - 2¹⁰ = 1011220219987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011220221013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4538855 + ... + 4756431.

It is an arithmetic number, because the mean of its divisors is an integer number (42438153744).

Almost surely, 2^{1011220221011} is an apocalyptic number.

1011220221011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1011220221011 is a deficient number, since it is larger than the sum of its proper divisors (346800698797).

1011220221011 is a wasteful number, since it uses less digits than its factorization.

1011220221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222251.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011220221011 its reverse (1101220221101), we get a palindrome (2112440442112).

It can be divided in two parts, 1011 and 220221011, that added together give a palindrome (220222022).

The spelling of 1011220221011 in words is "one trillion, eleven billion, two hundred twenty million, two hundred twenty-one thousand, eleven".