1051020011 has 4 divisors (see below), whose sum is σ = 1057313712. Its totient is φ = 1044726312.

The previous prime is 1051019993. The next prime is 1051020013. The reversal of 1051020011 is 1100201501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1051020011 - 2¹⁰ = 1051018987 is a prime.

It is a super-2 number, since 2×1051020011² = 2209286127044880242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051019974 and 1051020001.

It is not an unprimeable number, because it can be changed into a prime (1051020013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3146600 + ... + 3146933.

It is an arithmetic number, because the mean of its divisors is an integer number (264328428).

Almost surely, 2^1051020011 is an apocalyptic number.

1051020011 is a deficient number, since it is larger than the sum of its proper divisors (6293701).

1051020011 is an equidigital number, since it uses as much as digits as its factorization.

1051020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293700.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1051020011 is about 32419.4387829278. The cubic root of 1051020011 is about 1016.7253726678.

Adding to 1051020011 its reverse (1100201501), we get a palindrome (2151221512).

The spelling of 1051020011 in words is "one billion, fifty-one million, twenty thousand, eleven".