212111101202101 has 4 divisors (see below), whose sum is σ = 212162949434304. Its totient is φ = 212059252969900.

The previous prime is 212111101202069. The next prime is 212111101202107. The reversal of 212111101202101 is 101202101111212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212111101202101 - 2⁵ = 212111101202069 is a prime.

It is a super-2 number, since 2×212111101202101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111101202107) 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, 25924109965 + ... + 25924118146.

It is an arithmetic number, because the mean of its divisors is an integer number (53040737358576).

Almost surely, 2^{212111101202101} is an apocalyptic number.

It is an amenable number.

212111101202101 is a deficient number, since it is larger than the sum of its proper divisors (51848232203).

212111101202101 is an equidigital number, since it uses as much as digits as its factorization.

212111101202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51848232202.

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

Adding to 212111101202101 its reverse (101202101111212), we get a palindrome (313313202313313).

The spelling of 212111101202101 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred one million, two hundred two thousand, one hundred one".