102120110111011 has 4 divisors (see below), whose sum is σ = 102120405338800. Its totient is φ = 102119814883224.

The previous prime is 102120110110981. The next prime is 102120110111021. The reversal of 102120110111011 is 110111011021201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102120110111011 - 2⁵ = 102120110110979 is a prime.

It is a super-2 number, since 2×102120110111011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120110110982 and 102120110111000.

It is not an unprimeable number, because it can be changed into a prime (102120110111021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147094431 + ... + 147787048.

It is an arithmetic number, because the mean of its divisors is an integer number (25530101334700).

Almost surely, 2^{102120110111011} is an apocalyptic number.

102120110111011 is a deficient number, since it is larger than the sum of its proper divisors (295227789).

102120110111011 is an equidigital number, since it uses as much as digits as its factorization.

102120110111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295227788.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 102120110111011 its reverse (110111011021201), we get a palindrome (212231121132212).

The spelling of 102120110111011 in words is "one hundred two trillion, one hundred twenty billion, one hundred ten million, one hundred eleven thousand, eleven".