101122211100221 has 4 divisors (see below), whose sum is σ = 101316303636444. Its totient is φ = 100928118564000.

The previous prime is 101122211100109. The next prime is 101122211100257. The reversal of 101122211100221 is 122001112221101.

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 58344986515321 + 42777224584900 = 7638389^2 + 6540430^2 .

It is a cyclic number.

It is not a de Polignac number, because 101122211100221 - 2⁴⁶ = 30753466922557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101122211100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101122211100821) 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, 97046267330 + ... + 97046268371.

It is an arithmetic number, because the mean of its divisors is an integer number (25329075909111).

Almost surely, 2^{101122211100221} is an apocalyptic number.

It is an amenable number.

101122211100221 is a deficient number, since it is larger than the sum of its proper divisors (194092536223).

101122211100221 is an equidigital number, since it uses as much as digits as its factorization.

101122211100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194092536222.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101122211100221 its reverse (122001112221101), we get a palindrome (223123323321322).

The spelling of 101122211100221 in words is "one hundred one trillion, one hundred twenty-two billion, two hundred eleven million, one hundred thousand, two hundred twenty-one".