212144231403 has 12 divisors (see below), whose sum is σ = 330002137920. Its totient is φ = 130550296176.

The previous prime is 212144231399. The next prime is 212144231419. The reversal of 212144231403 is 304132441212.

212144231403 is a `hidden beast` number, since 2 + 1 + 21 + 4 + 4 + 231 + 403 = 666.

It is not a de Polignac number, because 212144231403 - 2² = 212144231399 is a prime.

It is a super-2 number, since 2×212144231403² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212144231423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 906599163 + ... + 906599396.

It is an arithmetic number, because the mean of its divisors is an integer number (27500178160).

Almost surely, 2^212144231403 is an apocalyptic number.

212144231403 is a deficient number, since it is larger than the sum of its proper divisors (117857906517).

212144231403 is a wasteful number, since it uses less digits than its factorization.

212144231403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813198578 (or 1813198575 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 212144231403 its reverse (304132441212), we get a palindrome (516276672615).

The spelling of 212144231403 in words is "two hundred twelve billion, one hundred forty-four million, two hundred thirty-one thousand, four hundred three".