120211221989129 has 2 divisors, whose sum is σ = 120211221989130. Its totient is φ = 120211221989128.

The previous prime is 120211221989113. The next prime is 120211221989137. The reversal of 120211221989129 is 921989122112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119877973254400 + 333248734729 = 10948880^2 + 577277^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211221989129 - 2⁴ = 120211221989113 is a prime.

It is a super-2 number, since 2×120211221989129² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120211221989189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105610994564 + 60105610994565.

It is an arithmetic number, because the mean of its divisors is an integer number (60105610994565).

Almost surely, 2^{120211221989129} is an apocalyptic number.

It is an amenable number.

120211221989129 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211221989129 is an equidigital number, since it uses as much as digits as its factorization.

120211221989129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 50.

The spelling of 120211221989129 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred twenty-one million, nine hundred eighty-nine thousand, one hundred twenty-nine".