212021103101 has 4 divisors (see below), whose sum is σ = 212072159772. Its totient is φ = 211970046432.

The previous prime is 212021103031. The next prime is 212021103127. The reversal of 212021103101 is 101301120212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64376883076 + 147644220025 = 253726^2 + 384245^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021103101 - 2¹⁸ = 212020840957 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 (212021103401) 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, 25522106 + ... + 25530411.

It is an arithmetic number, because the mean of its divisors is an integer number (53018039943).

Almost surely, 2^212021103101 is an apocalyptic number.

It is an amenable number.

212021103101 is a deficient number, since it is larger than the sum of its proper divisors (51056671).

212021103101 is an equidigital number, since it uses as much as digits as its factorization.

212021103101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51056670.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212021103101 its reverse (101301120212), we get a palindrome (313322223313).

The spelling of 212021103101 in words is "two hundred twelve billion, twenty-one million, one hundred three thousand, one hundred one".