20120111102029 has 2 divisors, whose sum is σ = 20120111102030. Its totient is φ = 20120111102028.

The previous prime is 20120111101957. The next prime is 20120111102099. The reversal of 20120111102029 is 92020111102102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19883305264900 + 236805837129 = 4459070^2 + 486627^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120111102029 - 2¹⁹ = 20120110577741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120111102099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060055551014 + 10060055551015.

It is an arithmetic number, because the mean of its divisors is an integer number (10060055551015).

Almost surely, 2^{20120111102029} is an apocalyptic number.

It is an amenable number.

20120111102029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120111102029 is an equidigital number, since it uses as much as digits as its factorization.

20120111102029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 20120111102029 in words is "twenty trillion, one hundred twenty billion, one hundred eleven million, one hundred two thousand, twenty-nine".