1071922261 has 2 divisors, whose sum is σ = 1071922262. Its totient is φ = 1071922260.

The previous prime is 1071922237. The next prime is 1071922349. The reversal of 1071922261 is 1622291701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1025600625 + 46321636 = 32025^2 + 6806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071922261 - 2¹³ = 1071914069 is a prime.

It is a super-2 number, since 2×1071922261² = 2298034667254704242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071952261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535961130 + 535961131.

It is an arithmetic number, because the mean of its divisors is an integer number (535961131).

Almost surely, 2^1071922261 is an apocalyptic number.

It is an amenable number.

1071922261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071922261 is an equidigital number, since it uses as much as digits as its factorization.

1071922261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1071922261 is about 32740.2238996620. The cubic root of 1071922261 is about 1023.4212494598.

The spelling of 1071922261 in words is "one billion, seventy-one million, nine hundred twenty-two thousand, two hundred sixty-one".