101100000221221 has 4 divisors (see below), whose sum is σ = 101100669691500. Its totient is φ = 101099330750944.

The previous prime is 101100000221179. The next prime is 101100000221263. The reversal of 101100000221221 is 122122000001101.

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

It is an interprime number because it is at equal distance from previous prime (101100000221179) and next prime (101100000221263).

It can be written as a sum of positive squares in 2 ways, for example, as 39999123164196 + 61100877057025 = 6324486^2 + 7816705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101100000221221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100000225221) 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, 334508566 + ... + 334810663.

It is an arithmetic number, because the mean of its divisors is an integer number (25275167422875).

Almost surely, 2^{101100000221221} is an apocalyptic number.

It is an amenable number.

101100000221221 is a deficient number, since it is larger than the sum of its proper divisors (669470279).

101100000221221 is an equidigital number, since it uses as much as digits as its factorization.

101100000221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669470278.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101100000221221 its reverse (122122000001101), we get a palindrome (223222000222322).

The spelling of 101100000221221 in words is "one hundred one trillion, one hundred billion, two hundred twenty-one thousand, two hundred twenty-one".