1011211022101 has 8 divisors (see below), whose sum is σ = 1155996136064. Its totient is φ = 866507507280.

The previous prime is 1011211022093. The next prime is 1011211022113. The reversal of 1011211022101 is 1012201121101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011211022101 - 2³ = 1011211022093 is a prime.

It is a super-2 number, since 2×1011211022101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211022201) 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, 20373225 + ... + 20422798.

It is an arithmetic number, because the mean of its divisors is an integer number (144499517008).

Almost surely, 2^{1011211022101} is an apocalyptic number.

It is an amenable number.

1011211022101 is a deficient number, since it is larger than the sum of its proper divisors (144785113963).

1011211022101 is an equidigital number, since it uses as much as digits as its factorization.

1011211022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40799571.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011211022101 its reverse (1012201121101), we get a palindrome (2023412143202).

The spelling of 1011211022101 in words is "one trillion, eleven billion, two hundred eleven million, twenty-two thousand, one hundred one".