229778397102 has 16 divisors (see below), whose sum is σ = 469334598912. Its totient is φ = 74963164920.

The previous prime is 229778397073. The next prime is 229778397103. The reversal of 229778397102 is 201793877922.

It is a super-2 number, since 2×229778397102² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229778397103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407408224 + ... + 407408787.

It is an arithmetic number, because the mean of its divisors is an integer number (29333412432).

Almost surely, 2^229778397102 is an apocalyptic number.

229778397102 is an abundant number, since it is smaller than the sum of its proper divisors (239556201810).

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

229778397102 is a wasteful number, since it uses less digits than its factorization.

229778397102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814817063.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 229778397102 in words is "two hundred twenty-nine billion, seven hundred seventy-eight million, three hundred ninety-seven thousand, one hundred two".