20011210201001 has 8 divisors (see below), whose sum is σ = 20984830727880. Its totient is φ = 19056494927232.

The previous prime is 20011210200977. The next prime is 20011210201019. The reversal of 20011210201001 is 10010201211002.

It can be written as a sum of positive squares in 4 ways, for example, as 244605419776 + 19766604781225 = 494576^2 + 4445965^2 .

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 20011210201001 - 2³⁸ = 19736332294057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011210201201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4726311110 + ... + 4726315343.

It is an arithmetic number, because the mean of its divisors is an integer number (2623103840985).

Almost surely, 2^{20011210201001} is an apocalyptic number.

It is an amenable number.

20011210201001 is a deficient number, since it is larger than the sum of its proper divisors (973620526879).

20011210201001 is an equidigital number, since it uses as much as digits as its factorization.

20011210201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9452626555.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20011210201001 its reverse (10010201211002), we get a palindrome (30021411412003).

The spelling of 20011210201001 in words is "twenty trillion, eleven billion, two hundred ten million, two hundred one thousand, one".