101210222222221 has 12 divisors (see below), whose sum is σ = 117739071931260. Its totient is φ = 86748132461760.

The previous prime is 101210222222167. The next prime is 101210222222243. The reversal of 101210222222221 is 122222222012101.

It can be written as a sum of positive squares in 2 ways, for example, as 1052440033225 + 100157782188996 = 1025885^2 + 10007886^2 .

It is not a de Polignac number, because 101210222222221 - 2¹³ = 101210222214029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210222222192 and 101210222222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210222252221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40274970 + ... + 42714091.

It is an arithmetic number, because the mean of its divisors is an integer number (9811589327605).

Almost surely, 2^{101210222222221} is an apocalyptic number.

It is an amenable number.

101210222222221 is a deficient number, since it is larger than the sum of its proper divisors (16528849709039).

101210222222221 is an equidigital number, since it uses as much as digits as its factorization.

101210222222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83013964 (or 83013957 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 101210222222221 its reverse (122222222012101), we get a palindrome (223432444234322).

The spelling of 101210222222221 in words is "one hundred one trillion, two hundred ten billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".