1011001021101 has 8 divisors (see below), whose sum is σ = 1497779290560. Its totient is φ = 674000680716.

The previous prime is 1011001021097. The next prime is 1011001021109. The reversal of 1011001021101 is 1011201001101.

It is not a de Polignac number, because 1011001021101 - 2² = 1011001021097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011001021109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18722241105 + ... + 18722241158.

It is an arithmetic number, because the mean of its divisors is an integer number (187222411320).

Almost surely, 2^{1011001021101} is an apocalyptic number.

It is an amenable number.

1011001021101 is a deficient number, since it is larger than the sum of its proper divisors (486778269459).

1011001021101 is an equidigital number, since it uses as much as digits as its factorization.

1011001021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37444482272 (or 37444482266 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1011001021101 its reverse (1011201001101), we get a palindrome (2022202022202).

The spelling of 1011001021101 in words is "one trillion, eleven billion, one million, twenty-one thousand, one hundred one".