1221303211032 has 32 divisors (see below), whose sum is σ = 3059096028480. Its totient is φ = 406322670240.

The previous prime is 1221303211013. The next prime is 1221303211033. The reversal of 1221303211032 is 2301123031221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221303211033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48637194 + ... + 48662297.

It is an arithmetic number, because the mean of its divisors is an integer number (95596750890).

Almost surely, 2^{1221303211032} is an apocalyptic number.

1221303211032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221303211032 is an abundant number, since it is smaller than the sum of its proper divisors (1837792817448).

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

1221303211032 is a wasteful number, since it uses less digits than its factorization.

1221303211032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97300023 (or 97300019 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1221303211032 its reverse (2301123031221), we get a palindrome (3522426242253).

The spelling of 1221303211032 in words is "one trillion, two hundred twenty-one billion, three hundred three million, two hundred eleven thousand, thirty-two".