2211122211102 has 64 divisors (see below), whose sum is σ = 5617275747840. Its totient is φ = 631554884928.

The previous prime is 2211122211091. The next prime is 2211122211169. The reversal of 2211122211102 is 2011122211122.

2211122211102 is a `hidden beast` number, since 221 + 112 + 221 + 110 + 2 = 666.

It is a super-2 number, since 2×2211122211102² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333153 + ... + 2129139.

It is an arithmetic number, because the mean of its divisors is an integer number (87769933560).

Almost surely, 2^{2211122211102} is an apocalyptic number.

2211122211102 is an abundant number, since it is smaller than the sum of its proper divisors (3406153536738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211122211102 is a wasteful number, since it uses less digits than its factorization.

2211122211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799262 (or 1799256 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211122211102 its reverse (2011122211122), we get a palindrome (4222244422224).

The spelling of 2211122211102 in words is "two trillion, two hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, one hundred two".