1202121211212 has 18 divisors (see below), whose sum is σ = 3038695283988. Its totient is φ = 400707070392.

The previous prime is 1202121211201. The next prime is 1202121211217. The reversal of 1202121211212 is 2121121212021.

1202121211212 is a `hidden beast` number, since 120 + 2 + 121 + 211 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1202121211217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16696127898 + ... + 16696127969.

It is an arithmetic number, because the mean of its divisors is an integer number (168816404666).

Almost surely, 2^{1202121211212} is an apocalyptic number.

1202121211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1202121211212 is an abundant number, since it is smaller than the sum of its proper divisors (1836574072776).

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

1202121211212 is a wasteful number, since it uses less digits than its factorization.

1202121211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33392255877 (or 33392255872 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1202121211212 its reverse (2121121212021), we get a palindrome (3323242423233).

It can be divided in two parts, 12021 and 21211212, that multiplied together give a palindrome (254979979452).

The spelling of 1202121211212 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".