1212210001108 has 24 divisors (see below), whose sum is σ = 2179334946600. Its totient is φ = 589627591680.

The previous prime is 1212210001103. The next prime is 1212210001109. The reversal of 1212210001108 is 8011000122121.

It can be written as a sum of positive squares in 4 ways, for example, as 135226823824 + 1076983177284 = 367732^2 + 1037778^2 .

It is a super-2 number, since 2×1212210001108² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210001103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10532341 + ... + 10646812.

It is an arithmetic number, because the mean of its divisors is an integer number (90805622775).

Almost surely, 2^{1212210001108} is an apocalyptic number.

It is an amenable number.

1212210001108 is a deficient number, since it is larger than the sum of its proper divisors (967124945492).

1212210001108 is a wasteful number, since it uses less digits than its factorization.

1212210001108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21179547 (or 21179545 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1212210001108 its reverse (8011000122121), we get a palindrome (9223210123229).

The spelling of 1212210001108 in words is "one trillion, two hundred twelve billion, two hundred ten million, one thousand, one hundred eight".