221530020134 has 8 divisors (see below), whose sum is σ = 332298549408. Its totient is φ = 110763837000.

The previous prime is 221530020113. The next prime is 221530020181. The reversal of 221530020134 is 431020035122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327617 + ... + 741884.

It is an arithmetic number, because the mean of its divisors is an integer number (41537318676).

Almost surely, 2^221530020134 is an apocalyptic number.

221530020134 is a deficient number, since it is larger than the sum of its proper divisors (110768529274).

221530020134 is a wasteful number, since it uses less digits than its factorization.

221530020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173070.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 221530020134 its reverse (431020035122), we get a palindrome (652550055256).

The spelling of 221530020134 in words is "two hundred twenty-one billion, five hundred thirty million, twenty thousand, one hundred thirty-four".