10120121819 has 2 divisors, whose sum is σ = 10120121820. Its totient is φ = 10120121818.

The previous prime is 10120121813. The next prime is 10120121839. The reversal of 10120121819 is 91812102101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10120121819 - 2¹⁶ = 10120056283 is a prime.

It is a super-2 number, since 2×10120121819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10120121813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060060909 + 5060060910.

It is an arithmetic number, because the mean of its divisors is an integer number (5060060910).

Almost surely, 2^10120121819 is an apocalyptic number.

10120121819 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120121819 is an equidigital number, since it uses as much as digits as its factorization.

10120121819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 10120121819 in words is "ten billion, one hundred twenty million, one hundred twenty-one thousand, eight hundred nineteen".