20101210011211 has 6 divisors (see below), whose sum is σ = 23383040217180. Its totient is φ = 17229608580996.

The previous prime is 20101210011193. The next prime is 20101210011227. The reversal of 20101210011211 is 11211001210102.

It is a happy number.

It is not a de Polignac number, because 20101210011211 - 2²¹ = 20101207914059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20101210011191 and 20101210011200.

It is not an unprimeable number, because it can be changed into a prime (20101210011611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205114387821 + ... + 205114387918.

It is an arithmetic number, because the mean of its divisors is an integer number (3897173369530).

Almost surely, 2^{20101210011211} is an apocalyptic number.

20101210011211 is a deficient number, since it is larger than the sum of its proper divisors (3281830205969).

20101210011211 is an equidigital number, since it uses as much as digits as its factorization.

20101210011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410228775753 (or 410228775746 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20101210011211 its reverse (11211001210102), we get a palindrome (31312211221313).

The spelling of 20101210011211 in words is "twenty trillion, one hundred one billion, two hundred ten million, eleven thousand, two hundred eleven".