1201101022011 has 32 divisors (see below), whose sum is σ = 1765447665408. Its totient is φ = 720280074240.

The previous prime is 1201101021917. The next prime is 1201101022021. The reversal of 1201101022011 is 1102201011021.

It is not a de Polignac number, because 1201101022011 - 2³⁹ = 651345208123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201101022021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15765336 + ... + 15841338.

It is an arithmetic number, because the mean of its divisors is an integer number (55170239544).

Almost surely, 2^{1201101022011} is an apocalyptic number.

1201101022011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201101022011 is a deficient number, since it is larger than the sum of its proper divisors (564346643397).

1201101022011 is a wasteful number, since it uses less digits than its factorization.

1201101022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81051.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201101022011 its reverse (1102201011021), we get a palindrome (2303302033032).

It can be divided in two parts, 12011010 and 22011, that added together give a palindrome (12033021).

The spelling of 1201101022011 in words is "one trillion, two hundred one billion, one hundred one million, twenty-two thousand, eleven".