1212022101949 has 2 divisors, whose sum is σ = 1212022101950. Its totient is φ = 1212022101948.

The previous prime is 1212022101881. The next prime is 1212022102019. The reversal of 1212022101949 is 9491012202121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1020186861849 + 191835240100 = 1010043^2 + 437990^2 .

It is an emirp because it is prime and its reverse (9491012202121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212022101949 - 2⁷ = 1212022101821 is a prime.

It is a super-2 number, since 2×1212022101949² (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 (1212022101049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606011050974 + 606011050975.

It is an arithmetic number, because the mean of its divisors is an integer number (606011050975).

Almost surely, 2^{1212022101949} is an apocalyptic number.

It is an amenable number.

1212022101949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212022101949 is an equidigital number, since it uses as much as digits as its factorization.

1212022101949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 1212022101949 in words is "one trillion, two hundred twelve billion, twenty-two million, one hundred one thousand, nine hundred forty-nine".