1012211101321 has 32 divisors (see below), whose sum is σ = 1178334275328. Its totient is φ = 851643555840.

The previous prime is 1012211101261. The next prime is 1012211101397. The reversal of 1012211101321 is 1231011122101.

It is a happy number.

It is not a de Polignac number, because 1012211101321 - 2¹⁷ = 1012210970249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012211101295 and 1012211101304.

It is not an unprimeable number, because it can be changed into a prime (1012211102321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41965761 + ... + 41989873.

It is an arithmetic number, because the mean of its divisors is an integer number (36822946104).

Almost surely, 2^{1012211101321} is an apocalyptic number.

It is an amenable number.

1012211101321 is a deficient number, since it is larger than the sum of its proper divisors (166123174007).

1012211101321 is a wasteful number, since it uses less digits than its factorization.

1012211101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24721.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1012211101321 its reverse (1231011122101), we get a palindrome (2243222223422).

The spelling of 1012211101321 in words is "one trillion, twelve billion, two hundred eleven million, one hundred one thousand, three hundred twenty-one".