1220120202211 has 8 divisors (see below), whose sum is σ = 1221475377600. Its totient is φ = 1218765338280.

The previous prime is 1220120202187. The next prime is 1220120202253. The reversal of 1220120202211 is 1122020210221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220120202211 - 2¹⁷ = 1220120071139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220120212211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8252980 + ... + 8399518.

It is an arithmetic number, because the mean of its divisors is an integer number (152684422200).

Almost surely, 2^{1220120202211} is an apocalyptic number.

1220120202211 is a deficient number, since it is larger than the sum of its proper divisors (1355175389).

1220120202211 is a wasteful number, since it uses less digits than its factorization.

1220120202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155729.

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

Adding to 1220120202211 its reverse (1122020210221), we get a palindrome (2342140412432).

The spelling of 1220120202211 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred two thousand, two hundred eleven".