212103120202101 has 12 divisors (see below), whose sum is σ = 306371783236428. Its totient is φ = 141401798775744.

The previous prime is 212103120202079. The next prime is 212103120202109. The reversal of 212103120202101 is 101202021301212.

212103120202101 is a `hidden beast` number, since 2 + 121 + 0 + 312 + 0 + 20 + 210 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12587523452100 + 199515596750001 = 3547890^2 + 14124999^2 .

It is not a de Polignac number, because 212103120202101 - 2⁹ = 212103120201589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103120202109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18619890 + ... + 27765203.

It is an arithmetic number, because the mean of its divisors is an integer number (25530981936369).

Almost surely, 2^{212103120202101} is an apocalyptic number.

It is an amenable number.

212103120202101 is a deficient number, since it is larger than the sum of its proper divisors (94268663034327).

212103120202101 is a wasteful number, since it uses less digits than its factorization.

212103120202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46893172 (or 46893169 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212103120202101 its reverse (101202021301212), we get a palindrome (313305141503313).

The spelling of 212103120202101 in words is "two hundred twelve trillion, one hundred three billion, one hundred twenty million, two hundred two thousand, one hundred one".