102230013111221 has 20 divisors (see below), whose sum is σ = 108718786743132. Its totient is φ = 96128367369216.

The previous prime is 102230013111217. The next prime is 102230013111269. The reversal of 102230013111221 is 122111310032201.

It can be written as a sum of positive squares in 10 ways, for example, as 1811796760900 + 100418216350321 = 1346030^2 + 10020889^2 .

It is not a de Polignac number, because 102230013111221 - 2² = 102230013111217 is a prime.

It is a super-2 number, since 2×102230013111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102230013111193 and 102230013111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102230016111221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 90728525 + ... + 91848381.

Almost surely, 2^{102230013111221} is an apocalyptic number.

It is an amenable number.

102230013111221 is a deficient number, since it is larger than the sum of its proper divisors (6488773631911).

102230013111221 is an frugal number, since it uses more digits than its factorization.

102230013111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121018 (or 1120967 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 102230013111221 its reverse (122111310032201), we get a palindrome (224341323143422).

The spelling of 102230013111221 in words is "one hundred two trillion, two hundred thirty billion, thirteen million, one hundred eleven thousand, two hundred twenty-one".