1121021011000 has 64 divisors (see below), whose sum is σ = 2861660936160. Its totient is φ = 407644000000.

The previous prime is 1121021010973. The next prime is 1121021011049. The reversal of 1121021011000 is 1101201211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50944501 + ... + 50966500.

Almost surely, 2^{1121021011000} is an apocalyptic number.

1121021011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121021011000 is an abundant number, since it is smaller than the sum of its proper divisors (1740639925160).

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

1121021011000 is a wasteful number, since it uses less digits than its factorization.

1121021011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101911033 (or 101911019 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1121021011000 its reverse (1101201211), we get a palindrome (1122122212211).

The spelling of 1121021011000 in words is "one trillion, one hundred twenty-one billion, twenty-one million, eleven thousand".