102111011211211 has 4 divisors (see below), whose sum is σ = 102126536687032. Its totient is φ = 102095485735392.

The previous prime is 102111011211179. The next prime is 102111011211263. The reversal of 102111011211211 is 112112110111201.

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 102111011211211 - 2⁵ = 102111011211179 is a prime.

It is a super-2 number, since 2×102111011211211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111011211511) 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, 7762728045 + ... + 7762741198.

It is an arithmetic number, because the mean of its divisors is an integer number (25531634171758).

Almost surely, 2^{102111011211211} is an apocalyptic number.

102111011211211 is a deficient number, since it is larger than the sum of its proper divisors (15525475821).

102111011211211 is an equidigital number, since it uses as much as digits as its factorization.

102111011211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15525475820.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 102111011211211 its reverse (112112110111201), we get a palindrome (214223121322412).

The spelling of 102111011211211 in words is "one hundred two trillion, one hundred eleven billion, eleven million, two hundred eleven thousand, two hundred eleven".