1227021016 has 16 divisors (see below), whose sum is σ = 2477638800. Its totient is φ = 566317344.

The previous prime is 1227020989. The next prime is 1227021031. The reversal of 1227021016 is 6101207221.

It is a happy number.

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, 5899036 + ... + 5899243.

It is an arithmetic number, because the mean of its divisors is an integer number (154852425).

Almost surely, 2^1227021016 is an apocalyptic number.

It is an amenable number.

1227021016 is an abundant number, since it is smaller than the sum of its proper divisors (1250617784).

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

1227021016 is a wasteful number, since it uses less digits than its factorization.

1227021016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11798298 (or 11798294 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1227021016 is about 35028.8597587760. The cubic root of 1227021016 is about 1070.5755822496.

Adding to 1227021016 its reverse (6101207221), we get a palindrome (7328228237).

The spelling of 1227021016 in words is "one billion, two hundred twenty-seven million, twenty-one thousand, sixteen".