2221401123 has 12 divisors (see below), whose sum is σ = 3214164408. Its totient is φ = 1478407680.

The previous prime is 2221401109. The next prime is 2221401139. The reversal of 2221401123 is 3211041222.

It is a happy number.

It is not a de Polignac number, because 2221401123 - 2¹³ = 2221392931 is a prime.

It is a super-2 number, since 2×2221401123² = 9869245898531322258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221401096 and 2221401105.

It is not an unprimeable number, because it can be changed into a prime (2221401163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204958 + ... + 215523.

It is an arithmetic number, because the mean of its divisors is an integer number (267847034).

Almost surely, 2^2221401123 is an apocalyptic number.

2221401123 is a deficient number, since it is larger than the sum of its proper divisors (992763285).

2221401123 is a wasteful number, since it uses less digits than its factorization.

2221401123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421074 (or 421071 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2221401123 is about 47131.7422020447. The cubic root of 2221401123 is about 1304.7951358511.

Adding to 2221401123 its reverse (3211041222), we get a palindrome (5432442345).

The spelling of 2221401123 in words is "two billion, two hundred twenty-one million, four hundred one thousand, one hundred twenty-three".