111022021001 has 2 divisors, whose sum is σ = 111022021002. Its totient is φ = 111022021000.

The previous prime is 111022020961. The next prime is 111022021003. The reversal of 111022021001 is 100120220111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72995070976 + 38026950025 = 270176^2 + 195005^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022021001 - 2⁶ = 111022020937 is a prime.

Together with 111022021003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111022021003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511010500 + 55511010501.

It is an arithmetic number, because the mean of its divisors is an integer number (55511010501).

Almost surely, 2^111022021001 is an apocalyptic number.

It is an amenable number.

111022021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022021001 is an equidigital number, since it uses as much as digits as its factorization.

111022021001 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 11.

Adding to 111022021001 its reverse (100120220111), we get a palindrome (211142241112).

The spelling of 111022021001 in words is "one hundred eleven billion, twenty-two million, twenty-one thousand, one".