1210321220101 has 8 divisors (see below), whose sum is σ = 1383274696064. Its totient is φ = 1037380355280.

The previous prime is 1210321220077. The next prime is 1210321220159. The reversal of 1210321220101 is 1010221230121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210321220101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210321220191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2946225 + ... + 3331798.

It is an arithmetic number, because the mean of its divisors is an integer number (172909337008).

Almost surely, 2^{1210321220101} is an apocalyptic number.

It is an amenable number.

1210321220101 is a deficient number, since it is larger than the sum of its proper divisors (172953475963).

1210321220101 is an equidigital number, since it uses as much as digits as its factorization.

1210321220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305571.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1210321220101 its reverse (1010221230121), we get a palindrome (2220542450222).

The spelling of 1210321220101 in words is "one trillion, two hundred ten billion, three hundred twenty-one million, two hundred twenty thousand, one hundred one".