221514020 has 48 divisors (see below), whose sum is σ = 572533248. Its totient is φ = 70104960.

The previous prime is 221514019. The next prime is 221514031. The reversal of 221514020 is 20415122.

It is a super-2 number, since 2×221514020² = 98136922113120800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221514020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59036 + ... + 62675.

It is an arithmetic number, because the mean of its divisors is an integer number (11927776).

Almost surely, 2^221514020 is an apocalyptic number.

221514020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221514020 is an abundant number, since it is smaller than the sum of its proper divisors (351019228).

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

221514020 is a wasteful number, since it uses less digits than its factorization.

221514020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121740 (or 121738 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 221514020 is about 14883.3470697958. The cubic root of 221514020 is about 605.0627351105.

Adding to 221514020 its reverse (20415122), we get a palindrome (241929142).

The spelling of 221514020 in words is "two hundred twenty-one million, five hundred fourteen thousand, twenty".