40020020212001 has 2 divisors, whose sum is σ = 40020020212002. Its totient is φ = 40020020212000.

The previous prime is 40020020211971. The next prime is 40020020212033. The reversal of 40020020212001 is 10021202002004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32987849685025 + 7032170526976 = 5743505^2 + 2651824^2 .

It is a cyclic number.

It is not a de Polignac number, because 40020020212001 - 2⁶ = 40020020211937 is a prime.

It is not a weakly prime, because it can be changed into another prime (40020020212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010010106000 + 20010010106001.

It is an arithmetic number, because the mean of its divisors is an integer number (20010010106001).

Almost surely, 2^{40020020212001} is an apocalyptic number.

It is an amenable number.

40020020212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020020212001 is an equidigital number, since it uses as much as digits as its factorization.

40020020212001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 40020020212001 its reverse (10021202002004), we get a palindrome (50041222214005).

The spelling of 40020020212001 in words is "forty trillion, twenty billion, twenty million, two hundred twelve thousand, one".