1220212020211 has 16 divisors (see below), whose sum is σ = 1279840847040. Its totient is φ = 1161839831040.

The previous prime is 1220212020151. The next prime is 1220212020227. The reversal of 1220212020211 is 1120202120221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220212020211 - 2¹⁷ = 1220211889139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220212020241) 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, 18610 + ... + 1562296.

It is an arithmetic number, because the mean of its divisors is an integer number (79990052940).

Almost surely, 2^{1220212020211} is an apocalyptic number.

1220212020211 is a deficient number, since it is larger than the sum of its proper divisors (59628826829).

1220212020211 is a wasteful number, since it uses less digits than its factorization.

1220212020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544094.

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

Adding to 1220212020211 its reverse (1120202120221), we get a palindrome (2340414140432).

The spelling of 1220212020211 in words is "one trillion, two hundred twenty billion, two hundred twelve million, twenty thousand, two hundred eleven".