210121330300139 has 2 divisors, whose sum is σ = 210121330300140. Its totient is φ = 210121330300138.

The previous prime is 210121330300097. The next prime is 210121330300249. The reversal of 210121330300139 is 931003033121012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210121330300139 - 2¹² = 210121330296043 is a prime.

It is a super-2 number, since 2×210121330300139² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210121330300639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060665150069 + 105060665150070.

It is an arithmetic number, because the mean of its divisors is an integer number (105060665150070).

Almost surely, 2^{210121330300139} is an apocalyptic number.

210121330300139 is a deficient number, since it is larger than the sum of its proper divisors (1).

210121330300139 is an equidigital number, since it uses as much as digits as its factorization.

210121330300139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 210121330300139 in words is "two hundred ten trillion, one hundred twenty-one billion, three hundred thirty million, three hundred thousand, one hundred thirty-nine".