111212000102101 has 2 divisors, whose sum is σ = 111212000102102. Its totient is φ = 111212000102100.

The previous prime is 111212000102059. The next prime is 111212000102123. The reversal of 111212000102101 is 101201000212111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96648541338001 + 14563458764100 = 9830999^2 + 3816210^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212000102101 - 2⁴⁵ = 76027628013269 is a prime.

It is a super-2 number, since 2×111212000102101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212000102131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606000051050 + 55606000051051.

It is an arithmetic number, because the mean of its divisors is an integer number (55606000051051).

Almost surely, 2^{111212000102101} is an apocalyptic number.

It is an amenable number.

111212000102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212000102101 is an equidigital number, since it uses as much as digits as its factorization.

111212000102101 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 13.

Adding to 111212000102101 its reverse (101201000212111), we get a palindrome (212413000314212).

The spelling of 111212000102101 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred two thousand, one hundred one".