229287122900 has 54 divisors (see below), whose sum is σ = 546897190350. Its totient is φ = 83377131200.

The previous prime is 229287122861. The next prime is 229287122921. The reversal of 229287122900 is 9221782922.

It can be written as a sum of positive squares in 3 ways, for example, as 13682916676 + 215604206224 = 116974^2 + 464332^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9462575 + ... + 9486774.

Almost surely, 2^229287122900 is an apocalyptic number.

229287122900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229287122900 is an abundant number, since it is smaller than the sum of its proper divisors (317610067450).

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

229287122900 is a wasteful number, since it uses less digits than its factorization.

229287122900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949385 (or 18949367 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 229287122900 in words is "two hundred twenty-nine billion, two hundred eighty-seven million, one hundred twenty-two thousand, nine hundred".