1220211111023 has 8 divisors (see below), whose sum is σ = 1275617318496. Its totient is φ = 1165001032800.

The previous prime is 1220211111017. The next prime is 1220211111071. The reversal of 1220211111023 is 3201111120221.

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 1220211111023 - 2¹² = 1220211106927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220211110992 and 1220211111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220211111073) 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, 49019588 + ... + 49044473.

It is an arithmetic number, because the mean of its divisors is an integer number (159452164812).

Almost surely, 2^{1220211111023} is an apocalyptic number.

1220211111023 is a deficient number, since it is larger than the sum of its proper divisors (55406207473).

1220211111023 is an equidigital number, since it uses as much as digits as its factorization.

1220211111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98064625.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1220211111023 its reverse (3201111120221), we get a palindrome (4421322231244).

The spelling of 1220211111023 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred eleven thousand, twenty-three".