1221300222032 has 20 divisors (see below), whose sum is σ = 2581384560576. Its totient is φ = 555136464480.

The previous prime is 1221300222031. The next prime is 1221300222053. The reversal of 1221300222032 is 2302220031221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221300221995 and 1221300222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221300222031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3469602728 + ... + 3469603079.

Almost surely, 2^{1221300222032} is an apocalyptic number.

It is an amenable number.

1221300222032 is an abundant number, since it is smaller than the sum of its proper divisors (1360084338544).

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

1221300222032 is a wasteful number, since it uses less digits than its factorization.

1221300222032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939205826 (or 6939205820 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1221300222032 its reverse (2302220031221), we get a palindrome (3523520253253).

The spelling of 1221300222032 in words is "one trillion, two hundred twenty-one billion, three hundred million, two hundred twenty-two thousand, thirty-two".