1011112221010 has 16 divisors (see below), whose sum is σ = 1838764906776. Its totient is φ = 400275353088.

The previous prime is 1011112221001. The next prime is 1011112221017. The reversal of 1011112221010 is 101222111101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 982638020961 + 28474200049 = 991281^2 + 168743^2 .

It is not an unprimeable number, because it can be changed into a prime (1011112221017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521190897 + ... + 521192836.

Almost surely, 2^{1011112221010} is an apocalyptic number.

1011112221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011112221010 is a deficient number, since it is larger than the sum of its proper divisors (827652685766).

1011112221010 is a wasteful number, since it uses less digits than its factorization.

1011112221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042383837.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011112221010 its reverse (101222111101), we get a palindrome (1112334332111).

The spelling of 1011112221010 in words is "one trillion, eleven billion, one hundred twelve million, two hundred twenty-one thousand, ten".