111022120087 has 2 divisors, whose sum is σ = 111022120088. Its totient is φ = 111022120086.

The previous prime is 111022120051. The next prime is 111022120189. The reversal of 111022120087 is 780021220111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111022120087 - 2¹⁹ = 111021595799 is a prime.

It is a super-2 number, since 2×111022120087² (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 (111022123087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511060043 + 55511060044.

It is an arithmetic number, because the mean of its divisors is an integer number (55511060044).

Almost surely, 2^111022120087 is an apocalyptic number.

111022120087 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022120087 is an equidigital number, since it uses as much as digits as its factorization.

111022120087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 111022120087 its reverse (780021220111), we get a palindrome (891043340198).

The spelling of 111022120087 in words is "one hundred eleven billion, twenty-two million, one hundred twenty thousand, eighty-seven".