120212011000021 has 2 divisors, whose sum is σ = 120212011000022. Its totient is φ = 120212011000020.

The previous prime is 120212010999967. The next prime is 120212011000079. The reversal of 120212011000021 is 120000110212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91204199907921 + 29007811092100 = 9550089^2 + 5385890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120212011000021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120212010999965 and 120212011000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120212011030021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106005500010 + 60106005500011.

It is an arithmetic number, because the mean of its divisors is an integer number (60106005500011).

Almost surely, 2^{120212011000021} is an apocalyptic number.

It is an amenable number.

120212011000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120212011000021 is an equidigital number, since it uses as much as digits as its factorization.

120212011000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120212011000021 its reverse (120000110212021), we get a palindrome (240212121212042).

The spelling of 120212011000021 in words is "one hundred twenty trillion, two hundred twelve billion, eleven million, twenty-one", and thus it is an aban number.