2001212202001 has 2 divisors, whose sum is σ = 2001212202002. Its totient is φ = 2001212202000.

The previous prime is 2001212201929. The next prime is 2001212202047. The reversal of 2001212202001 is 1002022121002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1988802242001 + 12409960000 = 1410249^2 + 111400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001212202001 - 2¹⁵ = 2001212169233 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001212205001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000606101000 + 1000606101001.

It is an arithmetic number, because the mean of its divisors is an integer number (1000606101001).

Almost surely, 2^{2001212202001} is an apocalyptic number.

It is an amenable number.

2001212202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001212202001 is an equidigital number, since it uses as much as digits as its factorization.

2001212202001 is an evil number, because the sum of its binary digits is even.

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

Adding to 2001212202001 its reverse (1002022121002), we get a palindrome (3003234323003).

The spelling of 2001212202001 in words is "two trillion, one billion, two hundred twelve million, two hundred two thousand, one".