1222212100112 has 10 divisors (see below), whose sum is σ = 2368035943998. Its totient is φ = 611106050048.

The previous prime is 1222212100091. The next prime is 1222212100117. The reversal of 1222212100112 is 2110012122221.

It can be written as a sum of positive squares in only one way, i.e., 956632661776 + 265579438336 = 978076^2 + 515344^2 .

It is not an unprimeable number, because it can be changed into a prime (1222212100117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38194128113 + ... + 38194128144.

Almost surely, 2^{1222212100112} is an apocalyptic number.

It is an amenable number.

1222212100112 is a deficient number, since it is larger than the sum of its proper divisors (1145823843886).

1222212100112 is an equidigital number, since it uses as much as digits as its factorization.

1222212100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76388256265 (or 76388256259 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222212100112 its reverse (2110012122221), we get a palindrome (3332224222333).

The spelling of 1222212100112 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, one hundred thousand, one hundred twelve".