102030202012221 has 32 divisors (see below), whose sum is σ = 173653996339200. Its totient is φ = 57997721392560.

The previous prime is 102030202012187. The next prime is 102030202012229. The reversal of 102030202012221 is 122210202030201.

It is not a de Polignac number, because 102030202012221 - 2¹⁴ = 102030201995837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102030202012194 and 102030202012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102030202012229) 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, 1413163741 + ... + 1413235938.

It is an arithmetic number, because the mean of its divisors is an integer number (5426687385600).

Almost surely, 2^{102030202012221} is an apocalyptic number.

It is an amenable number.

102030202012221 is a deficient number, since it is larger than the sum of its proper divisors (71623794326979).

102030202012221 is a wasteful number, since it uses less digits than its factorization.

102030202012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826399886 (or 2826399880 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 102030202012221 its reverse (122210202030201), we get a palindrome (224240404042422).

The spelling of 102030202012221 in words is "one hundred two trillion, thirty billion, two hundred two million, twelve thousand, two hundred twenty-one".