1201210121219 has 2 divisors, whose sum is σ = 1201210121220. Its totient is φ = 1201210121218.

The previous prime is 1201210121203. The next prime is 1201210121329. The reversal of 1201210121219 is 9121210121021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201210121219 - 2⁴ = 1201210121203 is a prime.

It is a super-2 number, since 2×1201210121219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201210121194 and 1201210121203.

It is not a weakly prime, because it can be changed into another prime (1201210121819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605060609 + 600605060610.

It is an arithmetic number, because the mean of its divisors is an integer number (600605060610).

Almost surely, 2^{1201210121219} is an apocalyptic number.

1201210121219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201210121219 is an equidigital number, since it uses as much as digits as its factorization.

1201210121219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1201210121219 in words is "one trillion, two hundred one billion, two hundred ten million, one hundred twenty-one thousand, two hundred nineteen".