4012221400 has 48 divisors (see below), whose sum is σ = 10176458040. Its totient is φ = 1458988800.

The previous prime is 4012221397. The next prime is 4012221457. The reversal of 4012221400 is 41222104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909669 + ... + 914068.

Almost surely, 2^4012221400 is an apocalyptic number.

4012221400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4012221400 is an abundant number, since it is smaller than the sum of its proper divisors (6164236640).

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

4012221400 is a wasteful number, since it uses less digits than its factorization.

4012221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823764 (or 1823755 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4012221400 is about 63342.0981654381. The cubic root of 4012221400 is about 1589.0160968422.

Adding to 4012221400 its reverse (41222104), we get a palindrome (4053443504).

The spelling of 4012221400 in words is "four billion, twelve million, two hundred twenty-one thousand, four hundred".