21221121131332 has 12 divisors (see below), whose sum is σ = 37300560932880. Its totient is φ = 10563818007656.

The previous prime is 21221121131303. The next prime is 21221121131369. The reversal of 21221121131332 is 23313112112212.

It is a junction number, because it is equal to n+sod(n) for n = 21221121131297 and 21221121131306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11685638482 + ... + 11685640297.

It is an arithmetic number, because the mean of its divisors is an integer number (3108380077740).

Almost surely, 2^{21221121131332} is an apocalyptic number.

It is an amenable number.

21221121131332 is a deficient number, since it is larger than the sum of its proper divisors (16079439801548).

21221121131332 is a wasteful number, since it uses less digits than its factorization.

21221121131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23371279010 (or 23371279008 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 21221121131332 its reverse (23313112112212), we get a palindrome (44534233243544).

The spelling of 21221121131332 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-one thousand, three hundred thirty-two".