2261112227156 has 24 divisors (see below), whose sum is σ = 4057284840840. Its totient is φ = 1102159723392.

The previous prime is 2261112227137. The next prime is 2261112227173. The reversal of 2261112227156 is 6517222111622.

It can be written as a sum of positive squares in 4 ways, for example, as 552471104656 + 1708641122500 = 743284^2 + 1307150^2 .

It is a super-2 number, since 2×2261112227156² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33933671 + ... + 34000238.

It is an arithmetic number, because the mean of its divisors is an integer number (169053535035).

Almost surely, 2^{2261112227156} is an apocalyptic number.

It is an amenable number.

2261112227156 is a deficient number, since it is larger than the sum of its proper divisors (1796172613684).

2261112227156 is a wasteful number, since it uses less digits than its factorization.

2261112227156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67934123 (or 67934121 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

Adding to 2261112227156 its reverse (6517222111622), we get a palindrome (8778334338778).

The spelling of 2261112227156 in words is "two trillion, two hundred sixty-one billion, one hundred twelve million, two hundred twenty-seven thousand, one hundred fifty-six".