1332123220021 has 16 divisors (see below), whose sum is σ = 1591768117440. Its totient is φ = 1100481652480.

The previous prime is 1332123220019. The next prime is 1332123220049. The reversal of 1332123220021 is 1200223212331.

It is a cyclic number.

It is not a de Polignac number, because 1332123220021 - 2¹ = 1332123220019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1332123219974 and 1332123220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332123220091) 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, 122816191 + ... + 122827036.

It is an arithmetic number, because the mean of its divisors is an integer number (99485507340).

Almost surely, 2^{1332123220021} is an apocalyptic number.

1332123220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1332123220021 is a deficient number, since it is larger than the sum of its proper divisors (259644897419).

1332123220021 is a wasteful number, since it uses less digits than its factorization.

1332123220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245643284.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1332123220021 its reverse (1200223212331), we get a palindrome (2532346432352).

The spelling of 1332123220021 in words is "one trillion, three hundred thirty-two billion, one hundred twenty-three million, two hundred twenty thousand, twenty-one".