1020012100973 has 2 divisors, whose sum is σ = 1020012100974. Its totient is φ = 1020012100972.

The previous prime is 1020012100963. The next prime is 1020012101027. The reversal of 1020012100973 is 3790012100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001094299209 + 18917801764 = 1000547^2 + 137542^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020012100973 - 2⁸ = 1020012100717 is a prime.

It is a super-2 number, since 2×1020012100973² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020012100963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510006050486 + 510006050487.

It is an arithmetic number, because the mean of its divisors is an integer number (510006050487).

Almost surely, 2^{1020012100973} is an apocalyptic number.

It is an amenable number.

1020012100973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020012100973 is an equidigital number, since it uses as much as digits as its factorization.

1020012100973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The spelling of 1020012100973 in words is "one trillion, twenty billion, twelve million, one hundred thousand, nine hundred seventy-three".