1021225207 has 8 divisors (see below), whose sum is σ = 1087775136. Its totient is φ = 955395072.

The previous prime is 1021225193. The next prime is 1021225213. The reversal of 1021225207 is 7025221201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021225207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021225237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177018 + ... + 182695.

It is an arithmetic number, because the mean of its divisors is an integer number (135971892).

Almost surely, 2^1021225207 is an apocalyptic number.

1021225207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1021225207 is a deficient number, since it is larger than the sum of its proper divisors (66549929).

1021225207 is a wasteful number, since it uses less digits than its factorization.

1021225207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359897.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1021225207 is about 31956.6144483423. The cubic root of 1021225207 is about 1007.0255944308.

Adding to 1021225207 its reverse (7025221201), we get a palindrome (8046446408).

The spelling of 1021225207 in words is "one billion, twenty-one million, two hundred twenty-five thousand, two hundred seven".