102111221111211 has 32 divisors (see below), whose sum is σ = 162932152965120. Its totient is φ = 62830090059552.

The previous prime is 102111221111201. The next prime is 102111221111231. The reversal of 102111221111211 is 112111122111201.

102111221111211 is a `hidden beast` number, since 10 + 2 + 111 + 221 + 111 + 211 = 666.

It is not a de Polignac number, because 102111221111211 - 2⁹ = 102111221110699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102111221111201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14643765 + ... + 20461238.

It is an arithmetic number, because the mean of its divisors is an integer number (5091629780160).

Almost surely, 2^{102111221111211} is an apocalyptic number.

102111221111211 is a deficient number, since it is larger than the sum of its proper divisors (60820931853909).

102111221111211 is a wasteful number, since it uses less digits than its factorization.

102111221111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35113312 (or 35113306 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 102111221111211 its reverse (112111122111201), we get a palindrome (214222343222412).

The spelling of 102111221111211 in words is "one hundred two trillion, one hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred eleven".