1012211121101 has 8 divisors (see below), whose sum is σ = 1078579406520. Its totient is φ = 946601330688.

The previous prime is 1012211121083. The next prime is 1012211121161. The reversal of 1012211121101 is 1011211122101.

It can be written as a sum of positive squares in 4 ways, for example, as 148436055076 + 863775066025 = 385274^2 + 929395^2 .

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 1012211121101 - 2⁶ = 1012211121037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012211121161) 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, 189620996 + ... + 189626333.

It is an arithmetic number, because the mean of its divisors is an integer number (134822425815).

Almost surely, 2^{1012211121101} is an apocalyptic number.

It is an amenable number.

1012211121101 is a deficient number, since it is larger than the sum of its proper divisors (66368285419).

1012211121101 is a wasteful number, since it uses less digits than its factorization.

1012211121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379247503.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1012211121101 its reverse (1011211122101), we get a palindrome (2023422243202).

The spelling of 1012211121101 in words is "one trillion, twelve billion, two hundred eleven million, one hundred twenty-one thousand, one hundred one".