1212002019997 has 2 divisors, whose sum is σ = 1212002019998. Its totient is φ = 1212002019996.

The previous prime is 1212002019989. The next prime is 1212002020037. The reversal of 1212002019997 is 7999102002121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 946911932836 + 265090087161 = 973094^2 + 514869^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212002019997 - 2³ = 1212002019989 is a prime.

It is a super-4 number, since 4×1212002019997⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212002019797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606001009998 + 606001009999.

It is an arithmetic number, because the mean of its divisors is an integer number (606001009999).

Almost surely, 2^{1212002019997} is an apocalyptic number.

It is an amenable number.

1212002019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212002019997 is an equidigital number, since it uses as much as digits as its factorization.

1212002019997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 1212002019997 in words is "one trillion, two hundred twelve billion, two million, nineteen thousand, nine hundred ninety-seven".