1212202122112 has 16 divisors (see below), whose sum is σ = 2414933915400. Its totient is φ = 606101060992.

The previous prime is 1212202122083. The next prime is 1212202122119. The reversal of 1212202122112 is 2112212022121.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 1212202122112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212202122119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4735164412 + ... + 4735164667.

Almost surely, 2^{1212202122112} is an apocalyptic number.

It is an amenable number.

1212202122112 is a deficient number, since it is larger than the sum of its proper divisors (1202731793288).

1212202122112 is an frugal number, since it uses more digits than its factorization.

1212202122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470329093 (or 9470329081 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212202122112 its reverse (2112212022121), we get a palindrome (3324414144233).

Subtracting 1212202122112 from its reverse (2112212022121), we obtain a palindrome (900009900009).

The spelling of 1212202122112 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred twenty-two thousand, one hundred twelve".