2111021121222 has 96 divisors (see below), whose sum is σ = 4956242709600. Its totient is φ = 649364010048.

The previous prime is 2111021121217. The next prime is 2111021121241. The reversal of 2111021121222 is 2221211201112.

2111021121222 is a `hidden beast` number, since 211 + 1 + 0 + 211 + 21 + 222 = 666.

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 = 2111021121195 and 2111021121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239367529 + ... + 239376347.

It is an arithmetic number, because the mean of its divisors is an integer number (51627528225).

Almost surely, 2^{2111021121222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111021121222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478121354800).

2111021121222 is an abundant number, since it is smaller than the sum of its proper divisors (2845221588378).

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

2111021121222 is a wasteful number, since it uses less digits than its factorization.

2111021121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14919 (or 14890 counting only the distinct ones).

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

Adding to 2111021121222 its reverse (2221211201112), we get a palindrome (4332232322334).

The spelling of 2111021121222 in words is "two trillion, one hundred eleven billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".