20101011211211 has 16 divisors (see below), whose sum is σ = 23092841049600. Its totient is φ = 17139281702400.

The previous prime is 20101011211189. The next prime is 20101011211219. The reversal of 20101011211211 is 11211211010102.

It is a cyclic number.

It is not a de Polignac number, because 20101011211211 - 2¹⁰ = 20101011210187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20101011211219) 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, 5184980 + ... + 8190606.

It is an arithmetic number, because the mean of its divisors is an integer number (1443302565600).

Almost surely, 2^{20101011211211} is an apocalyptic number.

20101011211211 is a deficient number, since it is larger than the sum of its proper divisors (2991829838389).

20101011211211 is a wasteful number, since it uses less digits than its factorization.

20101011211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010634.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20101011211211 its reverse (11211211010102), we get a palindrome (31312222221313).

The spelling of 20101011211211 in words is "twenty trillion, one hundred one billion, eleven million, two hundred eleven thousand, two hundred eleven".