1612121026 has 16 divisors (see below), whose sum is σ = 2433864888. Its totient is φ = 800841600.

The previous prime is 1612121023. The next prime is 1612121029. The reversal of 1612121026 is 6201212161.

It is an interprime number because it is at equal distance from previous prime (1612121023) and next prime (1612121029).

It can be written as a sum of positive squares in 4 ways, for example, as 31979025 + 1580142001 = 5655^2 + 39751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1612120988 and 1612121006.

It is not an unprimeable number, because it can be changed into a prime (1612121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672486 + ... + 674878.

Almost surely, 2^1612121026 is an apocalyptic number.

1612121026 is a deficient number, since it is larger than the sum of its proper divisors (821743862).

1612121026 is a wasteful number, since it uses less digits than its factorization.

1612121026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1612121026 is about 40151.2269551006. The cubic root of 1612121026 is about 1172.5531761972.

Adding to 1612121026 its reverse (6201212161), we get a palindrome (7813333187).

The spelling of 1612121026 in words is "one billion, six hundred twelve million, one hundred twenty-one thousand, twenty-six".