1022212120987 has 2 divisors, whose sum is σ = 1022212120988. Its totient is φ = 1022212120986.

The previous prime is 1022212120967. The next prime is 1022212121057. The reversal of 1022212120987 is 7890212122201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022212120987 is a prime.

It is a super-2 number, since 2×1022212120987² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1022212120967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511106060493 + 511106060494.

It is an arithmetic number, because the mean of its divisors is an integer number (511106060494).

Almost surely, 2^{1022212120987} is an apocalyptic number.

1022212120987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022212120987 is an equidigital number, since it uses as much as digits as its factorization.

1022212120987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 1022212120987 in words is "one trillion, twenty-two billion, two hundred twelve million, one hundred twenty thousand, nine hundred eighty-seven".