2130220121009 has 2 divisors, whose sum is σ = 2130220121010. Its totient is φ = 2130220121008.

The previous prime is 2130220120991. The next prime is 2130220121023. The reversal of 2130220121009 is 9001210220312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2126974312225 + 3245808784 = 1458415^2 + 56972^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130220121009 - 2²⁸ = 2129951685553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2130220121039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065110060504 + 1065110060505.

It is an arithmetic number, because the mean of its divisors is an integer number (1065110060505).

Almost surely, 2^{2130220121009} is an apocalyptic number.

It is an amenable number.

2130220121009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130220121009 is an equidigital number, since it uses as much as digits as its factorization.

2130220121009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 2130220121009 in words is "two trillion, one hundred thirty billion, two hundred twenty million, one hundred twenty-one thousand, nine".