1212212202001 has 8 divisors (see below), whose sum is σ = 1214878611240. Its totient is φ = 1209546910848.

The previous prime is 1212212201939. The next prime is 1212212202017. The reversal of 1212212202001 is 1002022122121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 159692148225 + 1052520053776 = 399615^2 + 1025924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212212202001 - 2¹³ = 1212212193809 is a prime.

It is a super-3 number, since 3×1212212202001³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212212202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910055 + ... + 2464291.

It is an arithmetic number, because the mean of its divisors is an integer number (151859826405).

Almost surely, 2^{1212212202001} is an apocalyptic number.

It is an amenable number.

1212212202001 is a deficient number, since it is larger than the sum of its proper divisors (2666409239).

1212212202001 is an equidigital number, since it uses as much as digits as its factorization.

1212212202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559043.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212212202001 its reverse (1002022122121), we get a palindrome (2214234324122).

The spelling of 1212212202001 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two hundred two thousand, one".