1121020212021 has 8 divisors (see below), whose sum is σ = 1582616769984. Its totient is φ = 703385231040.

The previous prime is 1121020212017. The next prime is 1121020212073. The reversal of 1121020212021 is 1202120201211.

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

It is not a de Polignac number, because 1121020212021 - 2² = 1121020212017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121020212001) 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, 10990394185 + ... + 10990394286.

It is an arithmetic number, because the mean of its divisors is an integer number (197827096248).

Almost surely, 2^{1121020212021} is an apocalyptic number.

It is an amenable number.

1121020212021 is a deficient number, since it is larger than the sum of its proper divisors (461596557963).

1121020212021 is a wasteful number, since it uses less digits than its factorization.

1121020212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21980788491.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121020212021 its reverse (1202120201211), we get a palindrome (2323140413232).

The spelling of 1121020212021 in words is "one trillion, one hundred twenty-one billion, twenty million, two hundred twelve thousand, twenty-one".