1002122111211 has 128 divisors (see below), whose sum is σ = 1592871920640. Its totient is φ = 554698948608.

The previous prime is 1002122111183. The next prime is 1002122111213. The reversal of 1002122111211 is 1121112212001.

It is a happy number.

It is not a de Polignac number, because 1002122111211 - 2¹⁵ = 1002122078443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002122111213) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 391911945 + ... + 391914501.

It is an arithmetic number, because the mean of its divisors is an integer number (12444311880).

Almost surely, 2^{1002122111211} is an apocalyptic number.

1002122111211 is a deficient number, since it is larger than the sum of its proper divisors (590749809429).

1002122111211 is a wasteful number, since it uses less digits than its factorization.

1002122111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925.

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

Adding to 1002122111211 its reverse (1121112212001), we get a palindrome (2123234323212).

The spelling of 1002122111211 in words is "one trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred eleven".