101121541145 has 4 divisors (see below), whose sum is σ = 121345849380. Its totient is φ = 80897232912.

The previous prime is 101121541127. The next prime is 101121541151. The reversal of 101121541145 is 541145121101.

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 71483508496 + 29638032649 = 267364^2 + 172157^2 .

It is a cyclic number.

It is not a de Polignac number, because 101121541145 - 2⁸ = 101121540889 is a prime.

It is a super-2 number, since 2×101121541145² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10112154110 + ... + 10112154119.

It is an arithmetic number, because the mean of its divisors is an integer number (30336462345).

Almost surely, 2^101121541145 is an apocalyptic number.

It is an amenable number.

101121541145 is a deficient number, since it is larger than the sum of its proper divisors (20224308235).

101121541145 is an equidigital number, since it uses as much as digits as its factorization.

101121541145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20224308234.

The product of its (nonzero) digits is 800, while the sum is 26.

Adding to 101121541145 its reverse (541145121101), we get a palindrome (642266662246).

The spelling of 101121541145 in words is "one hundred one billion, one hundred twenty-one million, five hundred forty-one thousand, one hundred forty-five".