2220202021986 has 80 divisors (see below), whose sum is σ = 5358432401784. Its totient is φ = 683030589696.

The previous prime is 2220202021979. The next prime is 2220202021987. The reversal of 2220202021986 is 6891202020222.

It can be written as a sum of positive squares in 4 ways, for example, as 1608648305625 + 611553716361 = 1268325^2 + 782019^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2220202021986.

It is not an unprimeable number, because it can be changed into a prime (2220202021987) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13720180 + ... + 13881056.

Almost surely, 2^{2220202021986} is an apocalyptic number.

2220202021986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2220202021986 is an abundant number, since it is smaller than the sum of its proper divisors (3138230379798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220202021986 is a wasteful number, since it uses less digits than its factorization.

2220202021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167457 (or 167448 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 2220202021986 in words is "two trillion, two hundred twenty billion, two hundred two million, twenty-one thousand, nine hundred eighty-six".