1220023233211 has 16 divisors (see below), whose sum is σ = 1251505442880. Its totient is φ = 1188857404800.

The previous prime is 1220023233203. The next prime is 1220023233311. The reversal of 1220023233211 is 1123323200221.

It is a cyclic number.

It is not a de Polignac number, because 1220023233211 - 2³ = 1220023233203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220023233311) 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, 58675605 + ... + 58696393.

It is an arithmetic number, because the mean of its divisors is an integer number (78219090180).

Almost surely, 2^{1220023233211} is an apocalyptic number.

1220023233211 is a deficient number, since it is larger than the sum of its proper divisors (31482209669).

1220023233211 is a wasteful number, since it uses less digits than its factorization.

1220023233211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28326.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1220023233211 its reverse (1123323200221), we get a palindrome (2343346433432).

The spelling of 1220023233211 in words is "one trillion, two hundred twenty billion, twenty-three million, two hundred thirty-three thousand, two hundred eleven".