1000021122073 has 2 divisors, whose sum is σ = 1000021122074. Its totient is φ = 1000021122072.

The previous prime is 1000021122053. The next prime is 1000021122119. The reversal of 1000021122073 is 3702211200001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631829445129 + 368191676944 = 794877^2 + 606788^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000021122073 - 2²⁵ = 999987567641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000021122073.

It is not a weakly prime, because it can be changed into another prime (1000021122053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010561036 + 500010561037.

It is an arithmetic number, because the mean of its divisors is an integer number (500010561037).

Almost surely, 2^{1000021122073} is an apocalyptic number.

It is an amenable number.

1000021122073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021122073 is an equidigital number, since it uses as much as digits as its factorization.

1000021122073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 1000021122073 its reverse (3702211200001), we get a palindrome (4702232322074).

The spelling of 1000021122073 in words is "one trillion, twenty-one million, one hundred twenty-two thousand, seventy-three".