20020212211211 has 8 divisors (see below), whose sum is σ = 20136423990144. Its totient is φ = 19904006041920.

The previous prime is 20020212211193. The next prime is 20020212211273. The reversal of 20020212211211 is 11211221202002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020212211211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020212211211.

It is not an unprimeable number, because it can be changed into a prime (20020212211411) 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, 5865071 + ... + 8627831.

It is an arithmetic number, because the mean of its divisors is an integer number (2517052998768).

Almost surely, 2^{20020212211211} is an apocalyptic number.

20020212211211 is a deficient number, since it is larger than the sum of its proper divisors (116211778933).

20020212211211 is a wasteful number, since it uses less digits than its factorization.

20020212211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804821.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20020212211211 its reverse (11211221202002), we get a palindrome (31231433413213).

The spelling of 20020212211211 in words is "twenty trillion, twenty billion, two hundred twelve million, two hundred eleven thousand, two hundred eleven".