1021227201 has 6 divisors (see below), whose sum is σ = 1475105970. Its totient is φ = 680818128.

The previous prime is 1021227197. The next prime is 1021227223. The reversal of 1021227201 is 1027221201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1019844225 + 1382976 = 31935^2 + 1176^2 .

It is not a de Polignac number, because 1021227201 - 2² = 1021227197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021227271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56734836 + ... + 56734853.

It is an arithmetic number, because the mean of its divisors is an integer number (245850995).

Almost surely, 2^1021227201 is an apocalyptic number.

It is an amenable number.

1021227201 is a deficient number, since it is larger than the sum of its proper divisors (453878769).

1021227201 is a wasteful number, since it uses less digits than its factorization.

1021227201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113469695 (or 113469692 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1021227201 is about 31956.6456468760. The cubic root of 1021227201 is about 1007.0262498552.

Adding to 1021227201 its reverse (1027221201), we get a palindrome (2048448402).

The spelling of 1021227201 in words is "one billion, twenty-one million, two hundred twenty-seven thousand, two hundred one".