20020002100211 has 4 divisors (see below), whose sum is σ = 20035180268400. Its totient is φ = 20004823932024.

The previous prime is 20020002100207. The next prime is 20020002100279. The reversal of 20020002100211 is 11200120002002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20020002100211 - 2² = 20020002100207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020002100192 and 20020002100201.

It is not an unprimeable number, because it can be changed into a prime (20020002105211) 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, 7589082116 + ... + 7589084753.

It is an arithmetic number, because the mean of its divisors is an integer number (5008795067100).

Almost surely, 2^{20020002100211} is an apocalyptic number.

20020002100211 is a deficient number, since it is larger than the sum of its proper divisors (15178168189).

20020002100211 is a wasteful number, since it uses less digits than its factorization.

20020002100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15178168188.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20020002100211 its reverse (11200120002002), we get a palindrome (31220122102213).

The spelling of 20020002100211 in words is "twenty trillion, twenty billion, two million, one hundred thousand, two hundred eleven".