20120023111973 has 2 divisors, whose sum is σ = 20120023111974. Its totient is φ = 20120023111972.

The previous prime is 20120023111963. The next prime is 20120023112023. The reversal of 20120023111973 is 37911132002102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15529258355524 + 4590764756449 = 3940718^2 + 2142607^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120023111973 - 2²⁸ = 20119754676517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120023111963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060011555986 + 10060011555987.

It is an arithmetic number, because the mean of its divisors is an integer number (10060011555987).

Almost surely, 2^{20120023111973} is an apocalyptic number.

It is an amenable number.

20120023111973 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120023111973 is an equidigital number, since it uses as much as digits as its factorization.

20120023111973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 20120023111973 in words is "twenty trillion, one hundred twenty billion, twenty-three million, one hundred eleven thousand, nine hundred seventy-three".