1203120213221 has 2 divisors, whose sum is σ = 1203120213222. Its totient is φ = 1203120213220.

The previous prime is 1203120213157. The next prime is 1203120213241. The reversal of 1203120213221 is 1223120213021.

It is an a-pointer prime, because the next prime (1203120213241) can be obtained adding 1203120213221 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157883602500 + 45236610721 = 1076050^2 + 212689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203120213221 - 2⁶ = 1203120213157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203120213193 and 1203120213202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203120213241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601560106610 + 601560106611.

It is an arithmetic number, because the mean of its divisors is an integer number (601560106611).

Almost surely, 2^{1203120213221} is an apocalyptic number.

It is an amenable number.

1203120213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203120213221 is an equidigital number, since it uses as much as digits as its factorization.

1203120213221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1203120213221 its reverse (1223120213021), we get a palindrome (2426240426242).

The spelling of 1203120213221 in words is "one trillion, two hundred three billion, one hundred twenty million, two hundred thirteen thousand, two hundred twenty-one".