1220100211205 has 8 divisors (see below), whose sum is σ = 1464129647232. Its totient is φ = 976073906448.

The previous prime is 1220100211181. The next prime is 1220100211241. The reversal of 1220100211205 is 5021120010221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220100211205 - 2¹⁰ = 1220100210181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182672 + ... + 1572758.

It is an arithmetic number, because the mean of its divisors is an integer number (183016205904).

Almost surely, 2^{1220100211205} is an apocalyptic number.

It is an amenable number.

1220100211205 is a deficient number, since it is larger than the sum of its proper divisors (244029436027).

1220100211205 is a wasteful number, since it uses less digits than its factorization.

1220100211205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565635.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1220100211205 its reverse (5021120010221), we get a palindrome (6241220221426).

The spelling of 1220100211205 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred eleven thousand, two hundred five".