211020120112101 has 16 divisors (see below), whose sum is σ = 281432491215744. Its totient is φ = 140643919217664.

The previous prime is 211020120112007. The next prime is 211020120112117. The reversal of 211020120112101 is 101211021020112.

It is a happy number.

It is not a de Polignac number, because 211020120112101 - 2²¹ = 211020118014949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020120112121) 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, 182379261 + ... + 183532653.

It is an arithmetic number, because the mean of its divisors is an integer number (17589530700984).

Almost surely, 2^{211020120112101} is an apocalyptic number.

It is an amenable number.

211020120112101 is a deficient number, since it is larger than the sum of its proper divisors (70412371103643).

211020120112101 is a wasteful number, since it uses less digits than its factorization.

211020120112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169020.

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

Adding to 211020120112101 its reverse (101211021020112), we get a palindrome (312231141132213).

The spelling of 211020120112101 in words is "two hundred eleven trillion, twenty billion, one hundred twenty million, one hundred twelve thousand, one hundred one".