1561212114 has 64 divisors (see below), whose sum is σ = 3998149632. Its totient is φ = 394545600.

The previous prime is 1561212109. The next prime is 1561212131. The reversal of 1561212114 is 4112121651.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28572 + ... + 62759.

It is an arithmetic number, because the mean of its divisors is an integer number (62471088).

Almost surely, 2^1561212114 is an apocalyptic number.

1561212114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1561212114 is an abundant number, since it is smaller than the sum of its proper divisors (2436937518).

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

1561212114 is a wasteful number, since it uses less digits than its factorization.

1561212114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91391.

The product of its digits is 480, while the sum is 24.

The square root of 1561212114 is about 39512.1767813417. The cubic root of 1561212114 is about 1160.0783027801.

Adding to 1561212114 its reverse (4112121651), we get a palindrome (5673333765).

The spelling of 1561212114 in words is "one billion, five hundred sixty-one million, two hundred twelve thousand, one hundred fourteen".