1223223211650 has 96 divisors (see below), whose sum is σ = 3313409374656. Its totient is φ = 296177440000.

The previous prime is 1223223211643. The next prime is 1223223211697. The reversal of 1223223211650 is 561123223221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 903160 + ... + 1806140.

It is an arithmetic number, because the mean of its divisors is an integer number (34514680986).

Almost surely, 2^{1223223211650} is an apocalyptic number.

1223223211650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223223211650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656704687328).

1223223211650 is an abundant number, since it is smaller than the sum of its proper divisors (2090186163006).

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

1223223211650 is a wasteful number, since it uses less digits than its factorization.

1223223211650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903828 (or 903823 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1223223211650 its reverse (561123223221), we get a palindrome (1784346434871).

The spelling of 1223223211650 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred eleven thousand, six hundred fifty".