20121022320149 has 2 divisors, whose sum is σ = 20121022320150. Its totient is φ = 20121022320148.

The previous prime is 20121022320121. The next prime is 20121022320229. The reversal of 20121022320149 is 94102322012102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17820091318225 + 2300931001924 = 4221385^2 + 1516882^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121022320149 - 2¹² = 20121022316053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121022320449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060511160074 + 10060511160075.

It is an arithmetic number, because the mean of its divisors is an integer number (10060511160075).

Almost surely, 2^{20121022320149} is an apocalyptic number.

It is an amenable number.

20121022320149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121022320149 is an equidigital number, since it uses as much as digits as its factorization.

20121022320149 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 20121022320149 in words is "twenty trillion, one hundred twenty-one billion, twenty-two million, three hundred twenty thousand, one hundred forty-nine".