227121420 has 24 divisors (see below), whose sum is σ = 635940144. Its totient is φ = 60565696.

The previous prime is 227121397. The next prime is 227121439. The reversal of 227121420 is 24121722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1892619 + ... + 1892738.

It is an arithmetic number, because the mean of its divisors is an integer number (26497506).

Almost surely, 2^227121420 is an apocalyptic number.

227121420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227121420 is an abundant number, since it is smaller than the sum of its proper divisors (408818724).

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

227121420 is a wasteful number, since it uses less digits than its factorization.

227121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785369 (or 3785367 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 227121420 is about 15070.5480988582. The cubic root of 227121420 is about 610.1257646272.

The spelling of 227121420 in words is "two hundred twenty-seven million, one hundred twenty-one thousand, four hundred twenty".