1202121100212 has 12 divisors (see below), whose sum is σ = 2804949233856. Its totient is φ = 400707033400.

The previous prime is 1202121100121. The next prime is 1202121100303. The reversal of 1202121100212 is 2120011212021.

It is an interprime number because it is at equal distance from previous prime (1202121100121) and next prime (1202121100303).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1202121100191 and 1202121100200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50088379164 + ... + 50088379187.

It is an arithmetic number, because the mean of its divisors is an integer number (233745769488).

Almost surely, 2^{1202121100212} is an apocalyptic number.

1202121100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1202121100212 is an abundant number, since it is smaller than the sum of its proper divisors (1602828133644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1202121100212 is a wasteful number, since it uses less digits than its factorization.

1202121100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100176758358 (or 100176758356 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1202121100212 its reverse (2120011212021), we get a palindrome (3322132312233).

The spelling of 1202121100212 in words is "one trillion, two hundred two billion, one hundred twenty-one million, one hundred thousand, two hundred twelve".