1210220010001 has 4 divisors (see below), whose sum is σ = 1281409422372. Its totient is φ = 1139030597632.

The previous prime is 1210220009993. The next prime is 1210220010011. The reversal of 1210220010001 is 1000100220121.

It is a Cunningham number, because it is equal to 1100100²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 942211896976 + 268008113025 = 970676^2 + 517695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210220010001 - 2³ = 1210220009993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210220010001.

It is not an unprimeable number, because it can be changed into a prime (1210220010011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35594706160 + ... + 35594706193.

It is an arithmetic number, because the mean of its divisors is an integer number (320352355593).

Almost surely, 2^{1210220010001} is an apocalyptic number.

It is an amenable number.

1210220010001 is a deficient number, since it is larger than the sum of its proper divisors (71189412371).

1210220010001 is an equidigital number, since it uses as much as digits as its factorization.

1210220010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71189412370.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1210220010001 its reverse (1000100220121), we get a palindrome (2210320230122).

The spelling of 1210220010001 in words is "one trillion, two hundred ten billion, two hundred twenty million, ten thousand, one".