20212001020987 has 2 divisors, whose sum is σ = 20212001020988. Its totient is φ = 20212001020986.

The previous prime is 20212001020957. The next prime is 20212001021011. The reversal of 20212001020987 is 78902010021202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212001020987 - 2⁷ = 20212001020859 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212001020957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106000510493 + 10106000510494.

It is an arithmetic number, because the mean of its divisors is an integer number (10106000510494).

Almost surely, 2^{20212001020987} is an apocalyptic number.

20212001020987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212001020987 is an equidigital number, since it uses as much as digits as its factorization.

20212001020987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 20212001020987 in words is "twenty trillion, two hundred twelve billion, one million, twenty thousand, nine hundred eighty-seven".