1220211210009 has 32 divisors (see below), whose sum is σ = 1854233389440. Its totient is φ = 706951616000.

The previous prime is 1220211209963. The next prime is 1220211210041. The reversal of 1220211210009 is 9000121120221.

It is a cyclic number.

It is not a de Polignac number, because 1220211210009 - 2¹⁷ = 1220211078937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220211110009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6215412 + ... + 6408725.

It is an arithmetic number, because the mean of its divisors is an integer number (57944793420).

Almost surely, 2^{1220211210009} is an apocalyptic number.

It is an amenable number.

1220211210009 is a deficient number, since it is larger than the sum of its proper divisors (634022179431).

1220211210009 is a wasteful number, since it uses less digits than its factorization.

1220211210009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624281.

The product of its (nonzero) digits is 144, while the sum is 21.

It can be divided in two parts, 12202 and 11210009, that added together give a palindrome (11222211).

The spelling of 1220211210009 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred ten thousand, nine".