1030145241221 has 2 divisors, whose sum is σ = 1030145241222. Its totient is φ = 1030145241220.

The previous prime is 1030145241211. The next prime is 1030145241239. The reversal of 1030145241221 is 1221425410301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018311064996 + 11834176225 = 1009114^2 + 108785^2 .

It is an emirp because it is prime and its reverse (1221425410301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030145241221 is a prime.

It is a super-2 number, since 2×1030145241221² (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 (1030145241211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515072620610 + 515072620611.

It is an arithmetic number, because the mean of its divisors is an integer number (515072620611).

Almost surely, 2^{1030145241221} is an apocalyptic number.

It is an amenable number.

1030145241221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030145241221 is an equidigital number, since it uses as much as digits as its factorization.

1030145241221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 1030145241221 in words is "one trillion, thirty billion, one hundred forty-five million, two hundred forty-one thousand, two hundred twenty-one".