100212011001220 has 12 divisors (see below), whose sum is σ = 210445223102604. Its totient is φ = 40084804400480.

The previous prime is 100212011001217. The next prime is 100212011001233. The reversal of 100212011001220 is 22100110212001.

It can be written as a sum of positive squares in 2 ways, for example, as 20483969950084 + 79728041051136 = 4525922^2 + 8929056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100212011001220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505300275011 + ... + 2505300275050.

It is an arithmetic number, because the mean of its divisors is an integer number (17537101925217).

Almost surely, 2^{100212011001220} is an apocalyptic number.

100212011001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212011001220 is an abundant number, since it is smaller than the sum of its proper divisors (110233212101384).

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

100212011001220 is a wasteful number, since it uses less digits than its factorization.

100212011001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010600550070 (or 5010600550068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100212011001220 its reverse (22100110212001), we get a palindrome (122312121213221).

The spelling of 100212011001220 in words is "one hundred trillion, two hundred twelve billion, eleven million, one thousand, two hundred twenty".