1202121220212 has 96 divisors (see below), whose sum is σ = 3401259724800. Its totient is φ = 364137631200.

The previous prime is 1202121220211. The next prime is 1202121220273. The reversal of 1202121220212 is 2120221212021.

It is a happy number.

1202121220212 is a `hidden beast` number, since 1 + 20 + 212 + 1 + 220 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202121220211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2882839 + ... + 3273377.

It is an arithmetic number, because the mean of its divisors is an integer number (35429788800).

Almost surely, 2^{1202121220212} is an apocalyptic number.

1202121220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202121220212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700629862400).

1202121220212 is an abundant number, since it is smaller than the sum of its proper divisors (2199138504588).

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

1202121220212 is a wasteful number, since it uses less digits than its factorization.

1202121220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393154 (or 393146 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1202121220212 its reverse (2120221212021), we get a palindrome (3322342432233).

The spelling of 1202121220212 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twelve".