20120434102019 has 2 divisors, whose sum is σ = 20120434102020. Its totient is φ = 20120434102018.

The previous prime is 20120434102003. The next prime is 20120434102073. The reversal of 20120434102019 is 91020143402102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120434102019 - 2⁴ = 20120434102003 is a prime.

It is a super-2 number, since 2×20120434102019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120434101982 and 20120434102000.

It is not a weakly prime, because it can be changed into another prime (20120434152019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060217051009 + 10060217051010.

It is an arithmetic number, because the mean of its divisors is an integer number (10060217051010).

Almost surely, 2^{20120434102019} is an apocalyptic number.

20120434102019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120434102019 is an equidigital number, since it uses as much as digits as its factorization.

20120434102019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 20120434102019 in words is "twenty trillion, one hundred twenty billion, four hundred thirty-four million, one hundred two thousand, nineteen".