1056213001 has 4 divisors (see below), whose sum is σ = 1061743104. Its totient is φ = 1050682900.

The previous prime is 1056212953. The next prime is 1056213007. The reversal of 1056213001 is 1003126501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1056213001 - 2¹⁹ = 1055688713 is a prime.

It is a super-2 number, since 2×1056213001² = 2231171806962852002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056213001.

It is not an unprimeable number, because it can be changed into a prime (1056213007) 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, 2764765 + ... + 2765146.

It is an arithmetic number, because the mean of its divisors is an integer number (265435776).

Almost surely, 2^1056213001 is an apocalyptic number.

It is an amenable number.

1056213001 is a deficient number, since it is larger than the sum of its proper divisors (5530103).

1056213001 is an equidigital number, since it uses as much as digits as its factorization.

1056213001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530102.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1056213001 is about 32499.4307796306. The cubic root of 1056213001 is about 1018.3971368245.

Adding to 1056213001 its reverse (1003126501), we get a palindrome (2059339502).

The spelling of 1056213001 in words is "one billion, fifty-six million, two hundred thirteen thousand, one".