102010221101 has 4 divisors (see below), whose sum is σ = 102014147772. Its totient is φ = 102006294432.

The previous prime is 102010221091. The next prime is 102010221107. The reversal of 102010221101 is 101122010201.

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 12797491876 + 89212729225 = 113126^2 + 298685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102010221101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010221107) 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, 1924106 + ... + 1976411.

It is an arithmetic number, because the mean of its divisors is an integer number (25503536943).

Almost surely, 2^102010221101 is an apocalyptic number.

It is an amenable number.

102010221101 is a deficient number, since it is larger than the sum of its proper divisors (3926671).

102010221101 is an equidigital number, since it uses as much as digits as its factorization.

102010221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926670.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102010221101 its reverse (101122010201), we get a palindrome (203132231302).

The spelling of 102010221101 in words is "one hundred two billion, ten million, two hundred twenty-one thousand, one hundred one".