11211020220111 has 32 divisors (see below), whose sum is σ = 15238460160000. Its totient is φ = 7330002996960.

The previous prime is 11211020220107. The next prime is 11211020220119. The reversal of 11211020220111 is 11102202011211.

It is a happy number.

It is not a de Polignac number, because 11211020220111 - 2² = 11211020220107 is a prime.

It is a super-3 number, since 3×11211020220111³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211020220119) 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, 32458320 + ... + 32801898.

It is an arithmetic number, because the mean of its divisors is an integer number (476201880000).

Almost surely, 2^{11211020220111} is an apocalyptic number.

11211020220111 is a deficient number, since it is larger than the sum of its proper divisors (4027439939889).

11211020220111 is a wasteful number, since it uses less digits than its factorization.

11211020220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344459.

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

Adding to 11211020220111 its reverse (11102202011211), we get a palindrome (22313222231322).

The spelling of 11211020220111 in words is "eleven trillion, two hundred eleven billion, twenty million, two hundred twenty thousand, one hundred eleven".