221320020134 has 8 divisors (see below), whose sum is σ = 333468730560. Its totient is φ = 110163776616.

The previous prime is 221320020101. The next prime is 221320020143. The reversal of 221320020134 is 431020023122.

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

It is a super-2 number, since 2×221320020134² (a number of 23 digits) contains 22 as substring.

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, 248116169 + ... + 248117060.

It is an arithmetic number, because the mean of its divisors is an integer number (41683591320).

Almost surely, 2^221320020134 is an apocalyptic number.

221320020134 is a deficient number, since it is larger than the sum of its proper divisors (112148710426).

221320020134 is a wasteful number, since it uses less digits than its factorization.

221320020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496233454.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 221320020134 its reverse (431020023122), we get a palindrome (652340043256).

The spelling of 221320020134 in words is "two hundred twenty-one billion, three hundred twenty million, twenty thousand, one hundred thirty-four".