20020212211201 has 4 divisors (see below), whose sum is σ = 20020681760004. Its totient is φ = 20019742662400.

The previous prime is 20020212211193. The next prime is 20020212211273. The reversal of 20020212211201 is 10211221202002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11606122714176 + 8414089497025 = 3406776^2 + 2900705^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020212211201 - 2³ = 20020212211193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020212211001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234710440 + ... + 234795721.

It is an arithmetic number, because the mean of its divisors is an integer number (5005170440001).

Almost surely, 2^{20020212211201} is an apocalyptic number.

It is an amenable number.

20020212211201 is a deficient number, since it is larger than the sum of its proper divisors (469548803).

20020212211201 is an equidigital number, since it uses as much as digits as its factorization.

20020212211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469548802.

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

Adding to 20020212211201 its reverse (10211221202002), we get a palindrome (30231433413203).

The spelling of 20020212211201 in words is "twenty trillion, twenty billion, two hundred twelve million, two hundred eleven thousand, two hundred one".