1210220220321 has 64 divisors (see below), whose sum is σ = 2083729766400. Its totient is φ = 679890708288.

The previous prime is 1210220220301. The next prime is 1210220220329. The reversal of 1210220220321 is 1230220220121.

1210220220321 is a `hidden beast` number, since 1 + 2 + 102 + 20 + 220 + 321 = 666.

It is not a de Polignac number, because 1210220220321 - 2⁵ = 1210220220289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210220220294 and 1210220220303.

It is not an unprimeable number, because it can be changed into a prime (1210220220329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6351586 + ... + 6539348.

It is an arithmetic number, because the mean of its divisors is an integer number (32558277600).

Almost surely, 2^{1210220220321} is an apocalyptic number.

It is an amenable number.

1210220220321 is a deficient number, since it is larger than the sum of its proper divisors (873509546079).

1210220220321 is a wasteful number, since it uses less digits than its factorization.

1210220220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188355 (or 188349 counting only the distinct ones).

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

Adding to 1210220220321 its reverse (1230220220121), we get a palindrome (2440440440442).

The spelling of 1210220220321 in words is "one trillion, two hundred ten billion, two hundred twenty million, two hundred twenty thousand, three hundred twenty-one".