102144040221 has 32 divisors (see below), whose sum is σ = 146263864320. Its totient is φ = 63259670144.

The previous prime is 102144040211. The next prime is 102144040247. The reversal of 102144040221 is 122040441201.

It is a cyclic number.

It is not a de Polignac number, because 102144040221 - 2⁵ = 102144040189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102144040211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186745 + ... + 489041.

It is an arithmetic number, because the mean of its divisors is an integer number (4570745760).

Almost surely, 2^102144040221 is an apocalyptic number.

It is an amenable number.

102144040221 is a deficient number, since it is larger than the sum of its proper divisors (44119824099).

102144040221 is a wasteful number, since it uses less digits than its factorization.

102144040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302465.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 102144040221 its reverse (122040441201), we get a palindrome (224184481422).

The spelling of 102144040221 in words is "one hundred two billion, one hundred forty-four million, forty thousand, two hundred twenty-one".