1011211201011 has 32 divisors (see below), whose sum is σ = 1523020965120. Its totient is φ = 591158736000.

The previous prime is 1011211201003. The next prime is 1011211201051. The reversal of 1011211201011 is 1101021121101.

It is not a de Polignac number, because 1011211201011 - 2³ = 1011211201003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011211201051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503121 + ... + 1508493.

It is an arithmetic number, because the mean of its divisors is an integer number (47594405160).

Almost surely, 2^{1011211201011} is an apocalyptic number.

1011211201011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1011211201011 is a deficient number, since it is larger than the sum of its proper divisors (511809764109).

1011211201011 is a wasteful number, since it uses less digits than its factorization.

1011211201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006467.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1011211201011 its reverse (1101021121101), we get a palindrome (2112232322112).

The spelling of 1011211201011 in words is "one trillion, eleven billion, two hundred eleven million, two hundred one thousand, eleven".