1101120101021 has 4 divisors (see below), whose sum is σ = 1101126568032. Its totient is φ = 1101113634012.

The previous prime is 1101120100979. The next prime is 1101120101093. The reversal of 1101120101021 is 1201010211011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1101120101021 - 2⁶ = 1101120100957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101120100993 and 1101120101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101120100021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2971001 + ... + 3321006.

It is an arithmetic number, because the mean of its divisors is an integer number (275281642008).

Almost surely, 2^{1101120101021} is an apocalyptic number.

It is an amenable number.

1101120101021 is a deficient number, since it is larger than the sum of its proper divisors (6467011).

1101120101021 is an equidigital number, since it uses as much as digits as its factorization.

1101120101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6467010.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1101120101021 its reverse (1201010211011), we get a palindrome (2302130312032).

The spelling of 1101120101021 in words is "one trillion, one hundred one billion, one hundred twenty million, one hundred one thousand, twenty-one".