102011021206 has 4 divisors (see below), whose sum is σ = 153016531812. Its totient is φ = 51005510602.

The previous prime is 102011021201. The next prime is 102011021207. The reversal of 102011021206 is 602120110201.

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

It is a super-3 number, since 3×102011021206³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102011021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502755300 + ... + 25502755303.

It is an arithmetic number, because the mean of its divisors is an integer number (38254132953).

Almost surely, 2^102011021206 is an apocalyptic number.

102011021206 is a deficient number, since it is larger than the sum of its proper divisors (51005510606).

102011021206 is an equidigital number, since it uses as much as digits as its factorization.

102011021206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51005510605.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102011021206 its reverse (602120110201), we get a palindrome (704131131407).

The spelling of 102011021206 in words is "one hundred two billion, eleven million, twenty-one thousand, two hundred six".