1101001210221 has 32 divisors (see below), whose sum is σ = 1614787485696. Its totient is φ = 661725792000.

The previous prime is 1101001210189. The next prime is 1101001210291. The reversal of 1101001210221 is 1220121001011.

It is not a de Polignac number, because 1101001210221 - 2⁵ = 1101001210189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101001210197 and 1101001210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101001210291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6272565 + ... + 6445701.

It is an arithmetic number, because the mean of its divisors is an integer number (50462108928).

Almost surely, 2^{1101001210221} is an apocalyptic number.

1101001210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101001210221 is a deficient number, since it is larger than the sum of its proper divisors (513786275475).

1101001210221 is a wasteful number, since it uses less digits than its factorization.

1101001210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174753.

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

Adding to 1101001210221 its reverse (1220121001011), we get a palindrome (2321122211232).

The spelling of 1101001210221 in words is "one trillion, one hundred one billion, one million, two hundred ten thousand, two hundred twenty-one".