2012210221662 has 20 divisors (see below), whose sum is σ = 4508841422976. Its totient is φ = 670736740500.

The previous prime is 2012210221621. The next prime is 2012210221667. The reversal of 2012210221662 is 2661220122102.

It is a super-2 number, since 2×2012210221662² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012210221667) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6210525214 + ... + 6210525537.

Almost surely, 2^{2012210221662} is an apocalyptic number.

2012210221662 is an abundant number, since it is smaller than the sum of its proper divisors (2496631201314).

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

2012210221662 is a wasteful number, since it uses less digits than its factorization.

2012210221662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12421050765 (or 12421050756 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 2012210221662 its reverse (2661220122102), we get a palindrome (4673430343764).

The spelling of 2012210221662 in words is "two trillion, twelve billion, two hundred ten million, two hundred twenty-one thousand, six hundred sixty-two".