1210111232011 has 4 divisors (see below), whose sum is σ = 1320121344024. Its totient is φ = 1100101120000.

The previous prime is 1210111231981. The next prime is 1210111232039. The reversal of 1210111232011 is 1102321110121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210111232011 - 2¹³ = 1210111223819 is a prime.

It is a super-2 number, since 2×1210111232011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210117232011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55005055990 + ... + 55005056011.

It is an arithmetic number, because the mean of its divisors is an integer number (330030336006).

Almost surely, 2^{1210111232011} is an apocalyptic number.

1210111232011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210111232011 is a deficient number, since it is larger than the sum of its proper divisors (110010112013).

1210111232011 is a wasteful number, since it uses less digits than its factorization.

1210111232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110010112012.

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

Adding to 1210111232011 its reverse (1102321110121), we get a palindrome (2312432342132).

The spelling of 1210111232011 in words is "one trillion, two hundred ten billion, one hundred eleven million, two hundred thirty-two thousand, eleven".