1221001020119 has 2 divisors, whose sum is σ = 1221001020120. Its totient is φ = 1221001020118.

The previous prime is 1221001020103. The next prime is 1221001020133. The reversal of 1221001020119 is 9110201001221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221001020119 - 2⁴ = 1221001020103 is a prime.

It is a super-2 number, since 2×1221001020119² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1221001020119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221001020199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610500510059 + 610500510060.

It is an arithmetic number, because the mean of its divisors is an integer number (610500510060).

Almost surely, 2^{1221001020119} is an apocalyptic number.

1221001020119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221001020119 is an equidigital number, since it uses as much as digits as its factorization.

1221001020119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1221001020119 in words is "one trillion, two hundred twenty-one billion, one million, twenty thousand, one hundred nineteen".