20212122002087 has 2 divisors, whose sum is σ = 20212122002088. Its totient is φ = 20212122002086.

The previous prime is 20212122002063. The next prime is 20212122002117. The reversal of 20212122002087 is 78020022121202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212122002087 - 2⁸ = 20212122001831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212122001087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106061001043 + 10106061001044.

It is an arithmetic number, because the mean of its divisors is an integer number (10106061001044).

Almost surely, 2^{20212122002087} is an apocalyptic number.

20212122002087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212122002087 is an equidigital number, since it uses as much as digits as its factorization.

20212122002087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 20212122002087 its reverse (78020022121202), we get a palindrome (98232144123289).

The spelling of 20212122002087 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, two thousand, eighty-seven".