1221310200822 has 128 divisors (see below), whose sum is σ = 2672396098560. Its totient is φ = 371018672640.

The previous prime is 1221310200821. The next prime is 1221310200841. The reversal of 1221310200822 is 2280020131221.

It is a junction number, because it is equal to n+sod(n) for n = 1221310200792 and 1221310200801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221310200821) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71317153 + ... + 71334275.

It is an arithmetic number, because the mean of its divisors is an integer number (20878094520).

Almost surely, 2^{1221310200822} is an apocalyptic number.

1221310200822 is an abundant number, since it is smaller than the sum of its proper divisors (1451085897738).

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

1221310200822 is a wasteful number, since it uses less digits than its factorization.

1221310200822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17478.

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 1221310200822 in words is "one trillion, two hundred twenty-one billion, three hundred ten million, two hundred thousand, eight hundred twenty-two".