102101212221101 has 4 divisors (see below), whose sum is σ = 102105524497692. Its totient is φ = 102096899944512.

The previous prime is 102101212221091. The next prime is 102101212221133. The reversal of 102101212221101 is 101122212101201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56480846359876 + 45620365861225 = 7515374^2 + 6754285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102101212221101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102101212221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101212221191) 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, 2156102780 + ... + 2156150133.

It is an arithmetic number, because the mean of its divisors is an integer number (25526381124423).

Almost surely, 2^{102101212221101} is an apocalyptic number.

It is an amenable number.

102101212221101 is a deficient number, since it is larger than the sum of its proper divisors (4312276591).

102101212221101 is an equidigital number, since it uses as much as digits as its factorization.

102101212221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312276590.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102101212221101 its reverse (101122212101201), we get a palindrome (203223424322302).

The spelling of 102101212221101 in words is "one hundred two trillion, one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred one".