110212111021 has 2 divisors, whose sum is σ = 110212111022. Its totient is φ = 110212111020.

The previous prime is 110212111013. The next prime is 110212111039. The reversal of 110212111021 is 120111212011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59188077796 + 51024033225 = 243286^2 + 225885^2 .

It is a cyclic number.

It is not a de Polignac number, because 110212111021 - 2³ = 110212111013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110212110992 and 110212111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110212111081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55106055510 + 55106055511.

It is an arithmetic number, because the mean of its divisors is an integer number (55106055511).

Almost surely, 2^110212111021 is an apocalyptic number.

It is an amenable number.

110212111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110212111021 is an equidigital number, since it uses as much as digits as its factorization.

110212111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110212111021 its reverse (120111212011), we get a palindrome (230323323032).

The spelling of 110212111021 in words is "one hundred ten billion, two hundred twelve million, one hundred eleven thousand, twenty-one".