1121021231010 has 32 divisors (see below), whose sum is σ = 2691278764992. Its totient is φ = 298847016000.

The previous prime is 1121021230997. The next prime is 1121021231017. The reversal of 1121021231010 is 101321201211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1121021231017) 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, 5649529 + ... + 5844588.

It is an arithmetic number, because the mean of its divisors is an integer number (84102461406).

Almost surely, 2^{1121021231010} is an apocalyptic number.

1121021231010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121021231010 is an abundant number, since it is smaller than the sum of its proper divisors (1570257533982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121021231010 is a wasteful number, since it uses less digits than its factorization.

1121021231010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11497378.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1121021231010 its reverse (101321201211), we get a palindrome (1222342432221).

The spelling of 1121021231010 in words is "one trillion, one hundred twenty-one billion, twenty-one million, two hundred thirty-one thousand, ten".