1220011201211 has 16 divisors (see below), whose sum is σ = 1340479864800. Its totient is φ = 1101142590720.

The previous prime is 1220011201193. The next prime is 1220011201217. The reversal of 1220011201211 is 1121021100221.

It is a cyclic number.

It is not a de Polignac number, because 1220011201211 - 2¹⁸ = 1220010939067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220011201217) 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, 3355901 + ... + 3701633.

It is an arithmetic number, because the mean of its divisors is an integer number (83779991550).

Almost surely, 2^{1220011201211} is an apocalyptic number.

1220011201211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220011201211 is a deficient number, since it is larger than the sum of its proper divisors (120468663589).

1220011201211 is a wasteful number, since it uses less digits than its factorization.

1220011201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348046.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220011201211 its reverse (1121021100221), we get a palindrome (2341032301432).

The spelling of 1220011201211 in words is "one trillion, two hundred twenty billion, eleven million, two hundred one thousand, two hundred eleven".