1101001021000 has 32 divisors (see below), whose sum is σ = 2576342391480. Its totient is φ = 440400408000.

The previous prime is 1101001020901. The next prime is 1101001021067. The reversal of 1101001021000 is 1201001011.

It can be written as a sum of positive squares in 4 ways, for example, as 623970446724 + 477030574276 = 789918^2 + 690674^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550499511 + ... + 550501510.

Almost surely, 2^{1101001021000} is an apocalyptic number.

1101001021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101001021000 is an abundant number, since it is smaller than the sum of its proper divisors (1475341370480).

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

1101001021000 is a wasteful number, since it uses less digits than its factorization.

1101001021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101001042 (or 1101001028 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1101001021000 its reverse (1201001011), we get a palindrome (1102202022011).

The spelling of 1101001021000 in words is "one trillion, one hundred one billion, one million, twenty-one thousand".