1120121101021 has 16 divisors (see below), whose sum is σ = 1277286404800. Its totient is φ = 979539063984.

The previous prime is 1120121101019. The next prime is 1120121101039. The reversal of 1120121101021 is 1201011210211.

It is a happy number.

It is not a de Polignac number, because 1120121101021 - 2¹ = 1120121101019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120121100992 and 1120121101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120121101081) 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, 13375131 + ... + 13458616.

It is an arithmetic number, because the mean of its divisors is an integer number (79830400300).

Almost surely, 2^{1120121101021} is an apocalyptic number.

It is an amenable number.

1120121101021 is a deficient number, since it is larger than the sum of its proper divisors (157165303779).

1120121101021 is an equidigital number, since it uses as much as digits as its factorization.

1120121101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26833805 (or 26833779 counting only the distinct ones).

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

Adding to 1120121101021 its reverse (1201011210211), we get a palindrome (2321132311232).

The spelling of 1120121101021 in words is "one trillion, one hundred twenty billion, one hundred twenty-one million, one hundred one thousand, twenty-one".