1091101030121 has 4 divisors (see below), whose sum is σ = 1092047346132. Its totient is φ = 1090154714112.

The previous prime is 1091101030049. The next prime is 1091101030139. The reversal of 1091101030121 is 1210301011901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 947887224025 + 143213806096 = 973595^2 + 378436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091101030121 - 2¹⁰ = 1091101029097 is a prime.

It is a super-2 number, since 2×1091101030121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1091101030093 and 1091101030102.

It is not an unprimeable number, because it can be changed into a prime (1091101032121) 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, 473156276 + ... + 473158581.

It is an arithmetic number, because the mean of its divisors is an integer number (273011836533).

Almost surely, 2^{1091101030121} is an apocalyptic number.

It is an amenable number.

1091101030121 is a deficient number, since it is larger than the sum of its proper divisors (946316011).

1091101030121 is an equidigital number, since it uses as much as digits as its factorization.

1091101030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946316010.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 1091101030121 in words is "one trillion, ninety-one billion, one hundred one million, thirty thousand, one hundred twenty-one".