111020201051 has 2 divisors, whose sum is σ = 111020201052. Its totient is φ = 111020201050.

The previous prime is 111020201009. The next prime is 111020201099. The reversal of 111020201051 is 150102020111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020201051 is a prime.

It is not a weakly prime, because it can be changed into another prime (111020201651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510100525 + 55510100526.

It is an arithmetic number, because the mean of its divisors is an integer number (55510100526).

Almost surely, 2^111020201051 is an apocalyptic number.

111020201051 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020201051 is an equidigital number, since it uses as much as digits as its factorization.

111020201051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 111020201051 its reverse (150102020111), we get a palindrome (261122221162).

The spelling of 111020201051 in words is "one hundred eleven billion, twenty million, two hundred one thousand, fifty-one".