1200021020071 has 2 divisors, whose sum is σ = 1200021020072. Its totient is φ = 1200021020070.

The previous prime is 1200021020041. The next prime is 1200021020101. The reversal of 1200021020071 is 1700201200021.

It is a balanced prime because it is at equal distance from previous prime (1200021020041) and next prime (1200021020101).

It is a cyclic number.

It is not a de Polignac number, because 1200021020071 - 2¹⁷ = 1200020888999 is a prime.

It is a super-2 number, since 2×1200021020071² (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 (1200021020041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600010510035 + 600010510036.

It is an arithmetic number, because the mean of its divisors is an integer number (600010510036).

Almost surely, 2^{1200021020071} is an apocalyptic number.

1200021020071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200021020071 is an equidigital number, since it uses as much as digits as its factorization.

1200021020071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 1200021020071 its reverse (1700201200021), we get a palindrome (2900222220092).

The spelling of 1200021020071 in words is "one trillion, two hundred billion, twenty-one million, twenty thousand, seventy-one".