1121121012021 has 8 divisors (see below), whose sum is σ = 1559820538560. Its totient is φ = 714917746752.

The previous prime is 1121121012017. The next prime is 1121121012031. The reversal of 1121121012021 is 1202101211211.

It is a happy number.

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

It is not a de Polignac number, because 1121121012021 - 2² = 1121121012017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121121012001) 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, 8124065236 + ... + 8124065373.

It is an arithmetic number, because the mean of its divisors is an integer number (194977567320).

Almost surely, 2^{1121121012021} is an apocalyptic number.

It is an amenable number.

1121121012021 is a deficient number, since it is larger than the sum of its proper divisors (438699526539).

1121121012021 is a wasteful number, since it uses less digits than its factorization.

1121121012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16248130635.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121121012021 its reverse (1202101211211), we get a palindrome (2323222223232).

The spelling of 1121121012021 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, twelve thousand, twenty-one".