111020212001 has 2 divisors, whose sum is σ = 111020212002. Its totient is φ = 111020212000.

The previous prime is 111020211971. The next prime is 111020212033. The reversal of 111020212001 is 100212020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109444518976 + 1575693025 = 330824^2 + 39695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020212001 is a prime.

It is not a weakly prime, because it can be changed into another prime (111020212081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510106000 + 55510106001.

It is an arithmetic number, because the mean of its divisors is an integer number (55510106001).

Almost surely, 2^111020212001 is an apocalyptic number.

It is an amenable number.

111020212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020212001 is an equidigital number, since it uses as much as digits as its factorization.

111020212001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111020212001 its reverse (100212020111), we get a palindrome (211232232112).

The spelling of 111020212001 in words is "one hundred eleven billion, twenty million, two hundred twelve thousand, one".