1211010122011 has 8 divisors (see below), whose sum is σ = 1231822189584. Its totient is φ = 1190229004320.

The previous prime is 1211010122009. The next prime is 1211010122149. The reversal of 1211010122011 is 1102210101121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1211010122011 - 2¹ = 1211010122009 is a prime.

It is a super-2 number, since 2×1211010122011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211010121982 and 1211010122000.

It is not an unprimeable number, because it can be changed into a prime (1211010722011) 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, 7658536 + ... + 7815061.

It is an arithmetic number, because the mean of its divisors is an integer number (153977773698).

Almost surely, 2^{1211010122011} is an apocalyptic number.

1211010122011 is a deficient number, since it is larger than the sum of its proper divisors (20812067573).

1211010122011 is a wasteful number, since it uses less digits than its factorization.

1211010122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15474941.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211010122011 its reverse (1102210101121), we get a palindrome (2313220223132).

The spelling of 1211010122011 in words is "one trillion, two hundred eleven billion, ten million, one hundred twenty-two thousand, eleven".