1012211051 has 2 divisors, whose sum is σ = 1012211052. Its totient is φ = 1012211050.

The previous prime is 1012211047. The next prime is 1012211107. The reversal of 1012211051 is 1501122101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012211051 - 2² = 1012211047 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012211351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105525 + 506105526.

It is an arithmetic number, because the mean of its divisors is an integer number (506105526).

Almost surely, 2^1012211051 is an apocalyptic number.

1012211051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012211051 is an equidigital number, since it uses as much as digits as its factorization.

1012211051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 1012211051 is about 31815.2644339160. The cubic root of 1012211051 is about 1004.0538940689.

Adding to 1012211051 its reverse (1501122101), we get a palindrome (2513333152).

The spelling of 1012211051 in words is "one billion, twelve million, two hundred eleven thousand, fifty-one".