20011002100211 has 16 divisors (see below), whose sum is σ = 20669289738240. Its totient is φ = 19353515639040.

The previous prime is 20011002100189. The next prime is 20011002100253. The reversal of 20011002100211 is 11200120011002.

It is a cyclic number.

It is not a de Polignac number, because 20011002100211 - 2²⁶ = 20010934991347 is a prime.

It is a super-4 number, since 4×20011002100211⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011002100192 and 20011002100201.

It is not an unprimeable number, because it can be changed into a prime (20011002100291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503693030 + ... + 503732756.

It is an arithmetic number, because the mean of its divisors is an integer number (1291830608640).

Almost surely, 2^{20011002100211} is an apocalyptic number.

20011002100211 is a deficient number, since it is larger than the sum of its proper divisors (658287638029).

20011002100211 is a wasteful number, since it uses less digits than its factorization.

20011002100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49394.

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

Adding to 20011002100211 its reverse (11200120011002), we get a palindrome (31211122111213).

The spelling of 20011002100211 in words is "twenty trillion, eleven billion, two million, one hundred thousand, two hundred eleven".