221434323102 has 64 divisors (see below), whose sum is σ = 518061600000. Its totient is φ = 69914941344.

The previous prime is 221434323079. The next prime is 221434323127. The reversal of 221434323102 is 201323434122.

221434323102 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 343 + 2 + 310 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 7755649 + ... + 7784147.

It is an arithmetic number, because the mean of its divisors is an integer number (8094712500).

Almost surely, 2^221434323102 is an apocalyptic number.

221434323102 is an abundant number, since it is smaller than the sum of its proper divisors (296627276898).

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

221434323102 is a wasteful number, since it uses less digits than its factorization.

221434323102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36102 (or 36096 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 221434323102 its reverse (201323434122), we get a palindrome (422757757224).

The spelling of 221434323102 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred twenty-three thousand, one hundred two".