1011120221221 has 8 divisors (see below), whose sum is σ = 1103156330688. Its totient is φ = 919103460000.

The previous prime is 1011120221213. The next prime is 1011120221257. The reversal of 1011120221221 is 1221220211101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011120221221 - 2³ = 1011120221213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011120221195 and 1011120221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011120221281) 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, 4727680 + ... + 4936921.

It is an arithmetic number, because the mean of its divisors is an integer number (137894541336).

Almost surely, 2^{1011120221221} is an apocalyptic number.

1011120221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011120221221 is a deficient number, since it is larger than the sum of its proper divisors (92036109467).

1011120221221 is an equidigital number, since it uses as much as digits as its factorization.

1011120221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9674123.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1011120221221 its reverse (1221220211101), we get a palindrome (2232340432322).

The spelling of 1011120221221 in words is "one trillion, eleven billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".