1212022020001 has 6 divisors (see below), whose sum is σ = 1312426211190. Its totient is φ = 1118789556768.

The previous prime is 1212022019993. The next prime is 1212022020007. The reversal of 1212022020001 is 1000202202121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 105349579776 + 1106672440225 = 324576^2 + 1051985^2 .

It is not a de Polignac number, because 1212022020001 - 2³ = 1212022019993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212022020007) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3585863796 + ... + 3585864133.

It is an arithmetic number, because the mean of its divisors is an integer number (218737701865).

Almost surely, 2^{1212022020001} is an apocalyptic number.

It is an amenable number.

1212022020001 is a deficient number, since it is larger than the sum of its proper divisors (100404191189).

1212022020001 is an equidigital number, since it uses as much as digits as its factorization.

1212022020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171727955 (or 7171727942 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1212022020001 its reverse (1000202202121), we get a palindrome (2212224222122).

The spelling of 1212022020001 in words is "one trillion, two hundred twelve billion, twenty-two million, twenty thousand, one".