102111001210 has 8 divisors (see below), whose sum is σ = 183799802196. Its totient is φ = 40844400480.

The previous prime is 102111001189. The next prime is 102111001229. The reversal of 102111001210 is 12100111201.

It can be written as a sum of positive squares in 2 ways, for example, as 97368337521 + 4742663689 = 312039^2 + 68867^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 10211100121 = 102111001210 / (1 + 0 + 2 + 1 + 1 + 1 + 0 + 0 + 1 + 2 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105550051 + ... + 5105550070.

Almost surely, 2^102111001210 is an apocalyptic number.

102111001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102111001210 is a deficient number, since it is larger than the sum of its proper divisors (81688800986).

102111001210 is a wasteful number, since it uses less digits than its factorization.

102111001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211100128.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 102111001210 its reverse (12100111201), we get a palindrome (114211112411).

The spelling of 102111001210 in words is "one hundred two billion, one hundred eleven million, one thousand, two hundred ten".