212222011122101 has 4 divisors (see below), whose sum is σ = 212609985548832. Its totient is φ = 211834036695372.

The previous prime is 212222011122091. The next prime is 212222011122119. The reversal of 212222011122101 is 101221110222212.

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 212222011122101 - 2¹⁰ = 212222011121077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222011122701) 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, 193987212545 + ... + 193987213638.

It is an arithmetic number, because the mean of its divisors is an integer number (53152496387208).

Almost surely, 2^{212222011122101} is an apocalyptic number.

It is an amenable number.

212222011122101 is a deficient number, since it is larger than the sum of its proper divisors (387974426731).

212222011122101 is an equidigital number, since it uses as much as digits as its factorization.

212222011122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387974426730.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212222011122101 its reverse (101221110222212), we get a palindrome (313443121344313).

The spelling of 212222011122101 in words is "two hundred twelve trillion, two hundred twenty-two billion, eleven million, one hundred twenty-two thousand, one hundred one".