20210112101211 has 4 divisors (see below), whose sum is σ = 26946816134952. Its totient is φ = 13473408067472.

The previous prime is 20210112101177. The next prime is 20210112101233. The reversal of 20210112101211 is 11210121101202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20210112101211 is a prime.

It is a super-2 number, since 2×20210112101211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20210112101281) 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, 3368352016866 + ... + 3368352016871.

It is an arithmetic number, because the mean of its divisors is an integer number (6736704033738).

Almost surely, 2^{20210112101211} is an apocalyptic number.

20210112101211 is a deficient number, since it is larger than the sum of its proper divisors (6736704033741).

20210112101211 is an equidigital number, since it uses as much as digits as its factorization.

20210112101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736704033740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20210112101211 its reverse (11210121101202), we get a palindrome (31420233202413).

The spelling of 20210112101211 in words is "twenty trillion, two hundred ten billion, one hundred twelve million, one hundred one thousand, two hundred eleven".