1220220211201 has 16 divisors (see below), whose sum is σ = 1305501783040. Its totient is φ = 1137193246800.

The previous prime is 1220220211181. The next prime is 1220220211219. The reversal of 1220220211201 is 1021120220221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220220211201 - 2⁵ = 1220220211169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220220211241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769115 + ... + 2360128.

It is an arithmetic number, because the mean of its divisors is an integer number (81593861440).

Almost surely, 2^{1220220211201} is an apocalyptic number.

It is an amenable number.

1220220211201 is a deficient number, since it is larger than the sum of its proper divisors (85281571839).

1220220211201 is a wasteful number, since it uses less digits than its factorization.

1220220211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129516.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220220211201 its reverse (1021120220221), we get a palindrome (2241340431422).

The spelling of 1220220211201 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred eleven thousand, two hundred one".