8220111771045 has 16 divisors (see below), whose sum is σ = 13152897539712. Its totient is φ = 4383820042560.

The previous prime is 8220111771029. The next prime is 8220111771077. The reversal of 8220111771045 is 5401771110228.

It is not a de Polignac number, because 8220111771045 - 2⁴ = 8220111771029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8220111770994 and 8220111771012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14689222 + ... + 15238551.

It is an arithmetic number, because the mean of its divisors is an integer number (822056096232).

Almost surely, 2^{8220111771045} is an apocalyptic number.

It is an amenable number.

8220111771045 is a deficient number, since it is larger than the sum of its proper divisors (4932785768667).

8220111771045 is a wasteful number, since it uses less digits than its factorization.

8220111771045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29946092.

The product of its (nonzero) digits is 31360, while the sum is 39.

The spelling of 8220111771045 in words is "eight trillion, two hundred twenty billion, one hundred eleven million, seven hundred seventy-one thousand, forty-five".