101120001100021 has 4 divisors (see below), whose sum is σ = 103027925649132. Its totient is φ = 99212076550912.

The previous prime is 101120001100009. The next prime is 101120001100043. The reversal of 101120001100021 is 120001100021101.

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 23995792102500 + 77124208997521 = 4898550^2 + 8782039^2 .

It is a cyclic number.

It is not a de Polignac number, because 101120001100021 - 2¹³ = 101120001091829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101120001099980 and 101120001100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101120001100621) 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, 953962274476 + ... + 953962274581.

It is an arithmetic number, because the mean of its divisors is an integer number (25756981412283).

Almost surely, 2^{101120001100021} is an apocalyptic number.

It is an amenable number.

101120001100021 is a deficient number, since it is larger than the sum of its proper divisors (1907924549111).

101120001100021 is an equidigital number, since it uses as much as digits as its factorization.

101120001100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907924549110.

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

Adding to 101120001100021 its reverse (120001100021101), we get a palindrome (221121101121122).

It can be divided in two parts, 101 and 120001100021, that multiplied together give a palindrome (12120111102121).

The spelling of 101120001100021 in words is "one hundred one trillion, one hundred twenty billion, one million, one hundred thousand, twenty-one".