1121312210021 has 16 divisors (see below), whose sum is σ = 1131641280000. Its totient is φ = 1111011673200.

The previous prime is 1121312210017. The next prime is 1121312210089. The reversal of 1121312210021 is 1200122131211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1121312210021 - 2² = 1121312210017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121312219021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320464730 + ... + 320468228.

It is an arithmetic number, because the mean of its divisors is an integer number (70727580000).

Almost surely, 2^{1121312210021} is an apocalyptic number.

It is an amenable number.

1121312210021 is a deficient number, since it is larger than the sum of its proper divisors (10329069979).

1121312210021 is a wasteful number, since it uses less digits than its factorization.

1121312210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1121312210021 its reverse (1200122131211), we get a palindrome (2321434341232).

The spelling of 1121312210021 in words is "one trillion, one hundred twenty-one billion, three hundred twelve million, two hundred ten thousand, twenty-one".