1021132222001 has 4 divisors (see below), whose sum is σ = 1022695977972. Its totient is φ = 1019568466032.

The previous prime is 1021132221971. The next prime is 1021132222043. The reversal of 1021132222001 is 1002222311201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 387134084401 + 633998137600 = 622201^2 + 796240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021132222001 - 2¹⁸ = 1021131959857 is a prime.

It is a super-2 number, since 2×1021132222001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021132422001) 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 3 ways as a sum of consecutive naturals, for example, 781877006 + ... + 781878311.

It is an arithmetic number, because the mean of its divisors is an integer number (255673994493).

Almost surely, 2^{1021132222001} is an apocalyptic number.

It is an amenable number.

1021132222001 is a deficient number, since it is larger than the sum of its proper divisors (1563755971).

1021132222001 is an equidigital number, since it uses as much as digits as its factorization.

1021132222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563755970.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021132222001 its reverse (1002222311201), we get a palindrome (2023354533202).

The spelling of 1021132222001 in words is "one trillion, twenty-one billion, one hundred thirty-two million, two hundred twenty-two thousand, one".