1000221101011 has 48 divisors (see below), whose sum is σ = 1169844609024. Its totient is φ = 852739272000.

The previous prime is 1000221100961. The next prime is 1000221101029. The reversal of 1000221101011 is 1101011220001.

It is not a de Polignac number, because 1000221101011 - 2⁷ = 1000221100883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000221101041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35750350 + ... + 35778316.

It is an arithmetic number, because the mean of its divisors is an integer number (24371762688).

Almost surely, 2^{1000221101011} is an apocalyptic number.

1000221101011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1000221101011 is a deficient number, since it is larger than the sum of its proper divisors (169623508013).

1000221101011 is a wasteful number, since it uses less digits than its factorization.

1000221101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28264 (or 28253 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1000221101011 its reverse (1101011220001), we get a palindrome (2101232321012).

The spelling of 1000221101011 in words is "one trillion, two hundred twenty-one million, one hundred one thousand, eleven".