1214401881 has 32 divisors (see below), whose sum is σ = 2038772736. Its totient is φ = 624600000.

The previous prime is 1214401871. The next prime is 1214401889. The reversal of 1214401881 is 1881044121.

It is not a de Polignac number, because 1214401881 - 2¹⁸ = 1214139737 is a prime.

It is a super-2 number, since 2×1214401881² = 2949543857152676322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1214401889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2695 + ... + 49356.

It is an arithmetic number, because the mean of its divisors is an integer number (63711648).

Almost surely, 2^1214401881 is an apocalyptic number.

1214401881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214401881 is a deficient number, since it is larger than the sum of its proper divisors (824370855).

1214401881 is a wasteful number, since it uses less digits than its factorization.

1214401881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52173.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 1214401881 is about 34848.2694118374. The cubic root of 1214401881 is about 1066.8928642144.

It can be divided in two parts, 121440 and 1881, that added together give a palindrome (123321).

The spelling of 1214401881 in words is "one billion, two hundred fourteen million, four hundred one thousand, eight hundred eighty-one".