1220212112211 has 16 divisors (see below), whose sum is σ = 1807738996000. Its totient is φ = 813466934784.

The previous prime is 1220212112201. The next prime is 1220212112221. The reversal of 1220212112211 is 1122112120221.

1220212112211 is a `hidden beast` number, since 1 + 220 + 21 + 211 + 2 + 211 = 666.

It is an interprime number because it is at equal distance from previous prime (1220212112201) and next prime (1220212112221).

It is not a de Polignac number, because 1220212112211 - 2⁵ = 1220212112179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220212112201) 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, 4569495 + ... + 4829151.

It is an arithmetic number, because the mean of its divisors is an integer number (112983687250).

Almost surely, 2^{1220212112211} is an apocalyptic number.

1220212112211 is a deficient number, since it is larger than the sum of its proper divisors (587526883789).

1220212112211 is a wasteful number, since it uses less digits than its factorization.

1220212112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433715 (or 433709 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1220212112211 its reverse (1122112120221), we get a palindrome (2342324232432).

The spelling of 1220212112211 in words is "one trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, two hundred eleven".