1222664963520 has 2688 divisors, whose sum is σ = 5648860643328. Its totient is φ = 217496125440.

The previous prime is 1222664963503. The next prime is 1222664963537. The reversal of 1222664963520 is 253694662221.

It is an interprime number because it is at equal distance from previous prime (1222664963503) and next prime (1222664963537).

It is a super-2 number, since 2×1222664963520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1222664963520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 11426775307 + ... + 11426775413.

It is an arithmetic number, because the mean of its divisors is an integer number (2101510656).

Almost surely, 2^{1222664963520} is an apocalyptic number.

1222664963520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222664963520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2824430321664).

1222664963520 is an abundant number, since it is smaller than the sum of its proper divisors (4426195679808).

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

1222664963520 is a wasteful number, since it uses less digits than its factorization.

1222664963520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 1222664963520 in words is "one trillion, two hundred twenty-two billion, six hundred sixty-four million, nine hundred sixty-three thousand, five hundred twenty".