1023212216664 has 96 divisors (see below), whose sum is σ = 3023566041600. Its totient is φ = 310019279040.

The previous prime is 1023212216647. The next prime is 1023212216681. The reversal of 1023212216664 is 4666122123201.

1023212216664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1023212216647) and next prime (1023212216681).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5579697 + ... + 5760159.

It is an arithmetic number, because the mean of its divisors is an integer number (31495479600).

Almost surely, 2^{1023212216664} is an apocalyptic number.

It is an amenable number.

1023212216664 is an abundant number, since it is smaller than the sum of its proper divisors (2000353824936).

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

1023212216664 is a wasteful number, since it uses less digits than its factorization.

1023212216664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187645 (or 187638 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

Adding to 1023212216664 its reverse (4666122123201), we get a palindrome (5689334339865).

The spelling of 1023212216664 in words is "one trillion, twenty-three billion, two hundred twelve million, two hundred sixteen thousand, six hundred sixty-four".