1221102211032 has 64 divisors (see below), whose sum is σ = 3700309737600. Its totient is φ = 370030972320.

The previous prime is 1221102211031. The next prime is 1221102211051. The reversal of 1221102211032 is 2301122011221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1221102210996 and 1221102211014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221102211031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256963578 + ... + 256968329.

It is an arithmetic number, because the mean of its divisors is an integer number (57817339650).

Almost surely, 2^{1221102211032} is an apocalyptic number.

1221102211032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221102211032 is an abundant number, since it is smaller than the sum of its proper divisors (2479207526568).

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

1221102211032 is a wasteful number, since it uses less digits than its factorization.

1221102211032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513931933 (or 513931923 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1221102211032 its reverse (2301122011221), we get a palindrome (3522224222253).

The spelling of 1221102211032 in words is "one trillion, two hundred twenty-one billion, one hundred two million, two hundred eleven thousand, thirty-two".