1261341022 has 32 divisors (see below), whose sum is σ = 2047809600. Its totient is φ = 580892928.

The previous prime is 1261340963. The next prime is 1261341023. The reversal of 1261341022 is 2201431621.

It is a junction number, because it is equal to n+sod(n) for n = 1261340984 and 1261341002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261341023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608604 + ... + 610672.

It is an arithmetic number, because the mean of its divisors is an integer number (63994050).

Almost surely, 2^1261341022 is an apocalyptic number.

1261341022 is a deficient number, since it is larger than the sum of its proper divisors (786468578).

1261341022 is a wasteful number, since it uses less digits than its factorization.

1261341022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1261341022 is about 35515.3631827129. The cubic root of 1261341022 is about 1080.4653407359.

Adding to 1261341022 its reverse (2201431621), we get a palindrome (3462772643).

It can be divided in two parts, 12613 and 41022, that added together give a palindrome (53635).

The spelling of 1261341022 in words is "one billion, two hundred sixty-one million, three hundred forty-one thousand, twenty-two".