1212022020112 has 10 divisors (see below), whose sum is σ = 2348292663998. Its totient is φ = 606011010048.

The previous prime is 1212022020049. The next prime is 1212022020113. The reversal of 1212022020112 is 2110202202121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 849670994176 + 362351025936 = 921776^2 + 601956^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 75751376257 = 1212022020112 / (1 + 2 + 1 + 2 + 0 + 2 + 2 + 0 + 2 + 0 + 1 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (1212022020113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37875688113 + ... + 37875688144.

Almost surely, 2^{1212022020112} is an apocalyptic number.

It is an amenable number.

1212022020112 is a deficient number, since it is larger than the sum of its proper divisors (1136270643886).

1212022020112 is an equidigital number, since it uses as much as digits as its factorization.

1212022020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75751376265 (or 75751376259 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212022020112 its reverse (2110202202121), we get a palindrome (3322224222233).

The spelling of 1212022020112 in words is "one trillion, two hundred twelve billion, twenty-two million, twenty thousand, one hundred twelve".