1001101211020 has 24 divisors (see below), whose sum is σ = 2121599818800. Its totient is φ = 396766717632.

The previous prime is 1001101211009. The next prime is 1001101211057. The reversal of 1001101211020 is 201121011001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001101210988 and 1001101211006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229608190 + ... + 229612549.

It is an arithmetic number, because the mean of its divisors is an integer number (88399992450).

Almost surely, 2^{1001101211020} is an apocalyptic number.

1001101211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001101211020 is an abundant number, since it is smaller than the sum of its proper divisors (1120498607780).

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

1001101211020 is a wasteful number, since it uses less digits than its factorization.

1001101211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459220857 (or 459220855 counting only the distinct ones).

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

Adding to 1001101211020 its reverse (201121011001), we get a palindrome (1202222222021).

It can be divided in two parts, 1001101 and 211020, that added together give a palindrome (1212121).

The spelling of 1001101211020 in words is "one trillion, one billion, one hundred one million, two hundred eleven thousand, twenty".