102011111210 has 8 divisors (see below), whose sum is σ = 183620000196. Its totient is φ = 40804444480.

The previous prime is 102011111171. The next prime is 102011111219. The reversal of 102011111210 is 12111110201.

It can be written as a sum of positive squares in 2 ways, for example, as 101946742681 + 64368529 = 319291^2 + 8023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 102011111191 and 102011111200.

It is not an unprimeable number, because it can be changed into a prime (102011111219) 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, 5100555551 + ... + 5100555570.

Almost surely, 2^102011111210 is an apocalyptic number.

102011111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102011111210 is a deficient number, since it is larger than the sum of its proper divisors (81608888986).

102011111210 is a wasteful number, since it uses less digits than its factorization.

102011111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201111128.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 102011111210 its reverse (12111110201), we get a palindrome (114122221411).

The spelling of 102011111210 in words is "one hundred two billion, eleven million, one hundred eleven thousand, two hundred ten".