111121420469 has 2 divisors, whose sum is σ = 111121420470. Its totient is φ = 111121420468.

The previous prime is 111121420429. The next prime is 111121420477. The reversal of 111121420469 is 964024121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62231788369 + 48889632100 = 249463^2 + 221110^2 .

It is a cyclic number.

It is not a de Polignac number, because 111121420469 - 2⁸ = 111121420213 is a prime.

It is a super-2 number, since 2×111121420469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111121420429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560710234 + 55560710235.

It is an arithmetic number, because the mean of its divisors is an integer number (55560710235).

Almost surely, 2^111121420469 is an apocalyptic number.

It is an amenable number.

111121420469 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121420469 is an equidigital number, since it uses as much as digits as its factorization.

111121420469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 111121420469 in words is "one hundred eleven billion, one hundred twenty-one million, four hundred twenty thousand, four hundred sixty-nine".