103213120221 has 48 divisors (see below), whose sum is σ = 165709739520. Its totient is φ = 61609697280.

The previous prime is 103213120169. The next prime is 103213120229. The reversal of 103213120221 is 122021312301.

103213120221 is a `hidden beast` number, since 1 + 0 + 321 + 3 + 120 + 221 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-103213120221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103213120194 and 103213120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103213120229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95421 + ... + 464253.

It is an arithmetic number, because the mean of its divisors is an integer number (3452286240).

Almost surely, 2^103213120221 is an apocalyptic number.

It is an amenable number.

103213120221 is a deficient number, since it is larger than the sum of its proper divisors (62496619299).

103213120221 is a wasteful number, since it uses less digits than its factorization.

103213120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368946 (or 368943 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 103213120221 its reverse (122021312301), we get a palindrome (225234432522).

The spelling of 103213120221 in words is "one hundred three billion, two hundred thirteen million, one hundred twenty thousand, two hundred twenty-one".