1021226151 has 32 divisors (see below), whose sum is σ = 1565171712. Its totient is φ = 586222560.

The previous prime is 1021226131. The next prime is 1021226179. The reversal of 1021226151 is 1516221201.

It is not a de Polignac number, because 1021226151 - 2¹³ = 1021217959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021226131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71646 + ... + 84708.

It is an arithmetic number, because the mean of its divisors is an integer number (48911616).

Almost surely, 2^1021226151 is an apocalyptic number.

1021226151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021226151 is a deficient number, since it is larger than the sum of its proper divisors (543945561).

1021226151 is a wasteful number, since it uses less digits than its factorization.

1021226151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13203.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1021226151 is about 31956.6292183641. The cubic root of 1021226151 is about 1007.0259047221.

Adding to 1021226151 its reverse (1516221201), we get a palindrome (2537447352).

It can be divided in two parts, 10212 and 26151, that added together give a palindrome (36363).

The spelling of 1021226151 in words is "one billion, twenty-one million, two hundred twenty-six thousand, one hundred fifty-one".