2211220311030 has 48 divisors (see below), whose sum is σ = 6051760855920. Its totient is φ = 558624078144.

The previous prime is 2211220311019. The next prime is 2211220311059. The reversal of 2211220311030 is 301130221122.

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

It is a junction number, because it is equal to n+sod(n) for n = 2211220310994 and 2211220311012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 646553937 + ... + 646557356.

It is an arithmetic number, because the mean of its divisors is an integer number (126078351165).

Almost surely, 2^{2211220311030} is an apocalyptic number.

2211220311030 is an abundant number, since it is smaller than the sum of its proper divisors (3840540544890).

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

2211220311030 is a wasteful number, since it uses less digits than its factorization.

2211220311030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293111325 (or 1293111322 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2211220311030 its reverse (301130221122), we get a palindrome (2512350532152).

The spelling of 2211220311030 in words is "two trillion, two hundred eleven billion, two hundred twenty million, three hundred eleven thousand, thirty".