1120120021021 has 16 divisors (see below), whose sum is σ = 1137411822960. Its totient is φ = 1102882314240.

The previous prime is 1120120021001. The next prime is 1120120021049. The reversal of 1120120021021 is 1201200210211.

It can be written as a sum of positive squares in 8 ways, for example, as 55634656900 + 1064485364121 = 235870^2 + 1031739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120120021021 - 2⁵ = 1120120020989 is a prime.

It is a super-2 number, since 2×1120120021021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120120020992 and 1120120021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120120021001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176978985 + ... + 176985313.

It is an arithmetic number, because the mean of its divisors is an integer number (71088238935).

Almost surely, 2^{1120120021021} is an apocalyptic number.

It is an amenable number.

1120120021021 is a deficient number, since it is larger than the sum of its proper divisors (17291801939).

1120120021021 is an equidigital number, since it uses as much as digits as its factorization.

1120120021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10176.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1120120021021 its reverse (1201200210211), we get a palindrome (2321320231232).

The spelling of 1120120021021 in words is "one trillion, one hundred twenty billion, one hundred twenty million, twenty-one thousand, twenty-one".