1332121111021 has 2 divisors, whose sum is σ = 1332121111022. Its totient is φ = 1332121111020.

The previous prime is 1332121111007. The next prime is 1332121111039. The reversal of 1332121111021 is 1201111212331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1280416718025 + 51704392996 = 1131555^2 + 227386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1332121111021 - 2⁷ = 1332121110893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1332121111021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1332121111621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666060555510 + 666060555511.

It is an arithmetic number, because the mean of its divisors is an integer number (666060555511).

Almost surely, 2^{1332121111021} is an apocalyptic number.

It is an amenable number.

1332121111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332121111021 is an equidigital number, since it uses as much as digits as its factorization.

1332121111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1332121111021 its reverse (1201111212331), we get a palindrome (2533232323352).

The spelling of 1332121111021 in words is "one trillion, three hundred thirty-two billion, one hundred twenty-one million, one hundred eleven thousand, twenty-one".