122222100213 has 12 divisors (see below), whose sum is σ = 176555298348. Its totient is φ = 81475739520.

The previous prime is 122222100197. The next prime is 122222100229. The reversal of 122222100213 is 312001222221.

It is an interprime number because it is at equal distance from previous prime (122222100197) and next prime (122222100229).

It can be written as a sum of positive squares in 2 ways, for example, as 1579108644 + 120642991569 = 39738^2 + 347337^2 .

It is not a de Polignac number, because 122222100213 - 2⁴ = 122222100197 is a prime.

It is a super-2 number, since 2×122222100213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222100113) 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, 332820 + ... + 595997.

It is an arithmetic number, because the mean of its divisors is an integer number (14712941529).

Almost surely, 2^122222100213 is an apocalyptic number.

It is an amenable number.

122222100213 is a deficient number, since it is larger than the sum of its proper divisors (54333198135).

122222100213 is a wasteful number, since it uses less digits than its factorization.

122222100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943444 (or 943441 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 122222100213 its reverse (312001222221), we get a palindrome (434223322434).

The spelling of 122222100213 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, two hundred thirteen".