1010001221101 has 4 divisors (see below), whose sum is σ = 1031490608832. Its totient is φ = 988511833372.

The previous prime is 1010001221093. The next prime is 1010001221147. The reversal of 1010001221101 is 1011221000101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1010001221101 - 2³ = 1010001221093 is a prime.

It is a super-2 number, since 2×1010001221101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010001281101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10744693795 + ... + 10744693888.

It is an arithmetic number, because the mean of its divisors is an integer number (257872652208).

Almost surely, 2^{1010001221101} is an apocalyptic number.

It is an amenable number.

1010001221101 is a deficient number, since it is larger than the sum of its proper divisors (21489387731).

1010001221101 is an equidigital number, since it uses as much as digits as its factorization.

1010001221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21489387730.

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

Adding to 1010001221101 its reverse (1011221000101), we get a palindrome (2021222221202).

The spelling of 1010001221101 in words is "one trillion, ten billion, one million, two hundred twenty-one thousand, one hundred one".