1211022101121 has 8 divisors (see below), whose sum is σ = 1845367011264. Its totient is φ = 692012629200.

The previous prime is 1211022101087. The next prime is 1211022101129. The reversal of 1211022101121 is 1211012201121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211022101121 - 2¹⁹ = 1211021576833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211022101121.

It is not an unprimeable number, because it can be changed into a prime (1211022101129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28833859530 + ... + 28833859571.

It is an arithmetic number, because the mean of its divisors is an integer number (230670876408).

Almost surely, 2^{1211022101121} is an apocalyptic number.

It is an amenable number.

1211022101121 is a deficient number, since it is larger than the sum of its proper divisors (634344910143).

1211022101121 is an equidigital number, since it uses as much as digits as its factorization.

1211022101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57667719111.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211022101121 its reverse (1211012201121), we get a palindrome (2422034302242).

The spelling of 1211022101121 in words is "one trillion, two hundred eleven billion, twenty-two million, one hundred one thousand, one hundred twenty-one".