1350621052221 has 16 divisors (see below), whose sum is σ = 2058397856384. Its totient is φ = 771667720704.

The previous prime is 1350621052217. The next prime is 1350621052321. The reversal of 1350621052221 is 1222501260531.

It is not a de Polignac number, because 1350621052221 - 2² = 1350621052217 is a prime.

It is a super-2 number, since 2×1350621052221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350621052201) 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, 4678936 + ... + 4959201.

It is an arithmetic number, because the mean of its divisors is an integer number (128649866024).

Almost surely, 2^{1350621052221} is an apocalyptic number.

It is an amenable number.

1350621052221 is a deficient number, since it is larger than the sum of its proper divisors (707776804163).

1350621052221 is an equidigital number, since it uses as much as digits as its factorization.

1350621052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9644820.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 1350621052221 in words is "one trillion, three hundred fifty billion, six hundred twenty-one million, fifty-two thousand, two hundred twenty-one".